SO-DIMM - Revision history

73.223.72.104: add redirect categories

2022-05-09T21:43:55Z

add redirect categories

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73.223.72.104: redirect to specific section

2022-05-09T21:39:43Z

redirect to specific section

← Previous revision		Revision as of 21:39, 9 May 2022
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	#REDIRECT [[DIMM]]		#REDIRECT [[DIMM#SO-DIMM]]

EmausBot: Bot: Fixing double redirect to DIMM

2022-03-25T19:23:35Z

Bot: Fixing double redirect to DIMM

← Previous revision		Revision as of 19:23, 25 March 2022
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	#REDIRECT [[~~dimm\|SO-~~DIMM]]		#REDIRECT [[DIMM]]

KelleyCook: Merge into DIMM Everything else was already covered there.

2022-03-23T12:35:10Z

Merge into DIMM Everything else was already covered there.

← Previous revision		Revision as of 12:35, 23 March 2022
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			#REDIRECT [[dimm\|SO-DIMM]]
	{{Multiple issues\|{{Update\|date=July 2021\|reason=Needs updating to include DDR4}}
	{{More citations needed\|date=August 2014}}}}

	[[File:Samsung-1GB-DDR2-Laptop-RAM.jpg\|thumb\|A 200-pin [[PC2-5300]] DDR2 SO-DIMM]]
	[[File:4GB DDR3 SO-DIMM.jpg\|thumb\|A 204-pin PC3-10600 DDR3 SO-DIMM]]
	[[File:Laptop SODIMM DDR Memory Comparison V2.svg\|thumb\|right\|A comparison between 200-pin DDR and DDR2 SDRAM SO-DIMMs, and a 204-pin DDR3 SO-DIMM module<ref name="custhelp" />]]
	[[File:DDR SO-DIMM slot PNr°0341.jpg\|thumb\|300px\|A SO-DIMM slot on a computer [[motherboard]]]]

	A '''SO-DIMM''' (pronounced "so-dimm" {{IPAc-en\|ˈ\|s\|oʊ\|d\|ɪ\|m}}, also spelled "'''SODIMM'''") or '''small outline [[DIMM]]''', is a type of [[computer memory]] built using [[integrated circuits]]. A SO-DIMM is a smaller alternative to a DIMM, being roughly half the physical size of a regular DIMM.

	SO-DIMMs are often used in systems that have limited space, which include laptops, [[Laptop\|notebooks]], small-footprint [[personal computer]]s such as those based on [[Nano-ITX]] [[motherboard]]s, high-end upgradable office [[Computer printer\|printers]], and [[networking hardware]] such as [[router (computing)\|routers]] and [[Network-attached storage\|NAS]] devices.<ref>{{cite web\|url=https://www.synology.com/en-global/products/Synology_RAM_Module\|title=Synology RAM Module\|author=Synology Inc.\|work=synology.com}}</ref> They are usually available with the same size data path and speed ratings of the regular DIMMs though normally with smaller capacities.

	== Visual identification ==
	Most types of SO-DIMMs can be recognized visually by the distinctive notches that "key" them for different applications:<ref name="custhelp">{{cite web
	\| url = http://acer.custhelp.com/app/answers/detail/a_id/2178/~/are-ddr,-ddr2-and-ddr3-so-dimm-memory-modules-interchangeable%3F
	\| title = Are DDR, DDR2 and DDR3 SO-DIMM memory modules interchangeable?
	\| access-date = 2015-06-26
	\| website = acer.custhelp.com
	}}</ref>
	* 100-pin SO-DIMMs ([[SDR SDRAM]]) have two notches.<ref>{{cite web
	\| url = http://www.memorytesters.com/ramcheck/ddr_100pin_adap.htm
	\| title = RAMCHECK 100-Pin DDR Adapter, a tool for testing and identifying JEDEC-compliant 100-pin DDR SO-DIMM modules
	\| year = 2013 \| access-date = 2015-06-26
	\| website = memorytesters.com
	}}</ref>
	* 144-pin SO-DIMMs ([[SDR SDRAM]]) have a single notch near the center.<ref>{{cite web
	\| url = http://www.micron.com/~/media/documents/products/data-sheet/modules/sodimm/sdf16c32_64x64hg.pdf
	\| title = Small-outline SDRAM module (MT16LSDF3264(L)H 256 MB and MT16LSDF6464(L)H 512 MB) Datasheet
	\| date = 2006-05-03 \| access-date = 2015-06-26
	\| publisher = [[Micron Technology]] \| page = 22
	}}</ref>
	* 200-pin SO-DIMMs ([[DDR SDRAM]] or [[DDR2 SDRAM]]) have a single notch nearer to one side.<ref>{{cite web\|url=http://www.smartm.com/files/salesLiterature/dram/ddr.pdf\|title=DDR DIMM & SODIMM Modules (184-pin DDR DIMM, 100-pin DDR DIMM, and 200-pin DDR SO-DIMM modules)\|year=2011\|website=smartm.com\|page=4\|archive-url=https://web.archive.org/web/20160305221427/http://www.smartm.com/files/salesLiterature/dram/ddr.pdf\|access-date=2015-06-26\|archive-date=2016-03-05}}</ref> The exact location of this notch varies (read below).
	* 204-pin SO-DIMMs ([[DDR3 SDRAM]]) have a single notch closer to the center than on 200-pin SO-DIMMs.<ref>{{cite web
	\| url = http://www.nanya.com/NanyaAdmin/GetFiles.ashx?ID=1118
	\| title = NT2GC64B(C)H4B0PS / NT4GC64B(C)88B0(1)NS / NT8GC64B(C)8HB0NS PC3(L)-10600 / PC3(L)-12800 Unbuffered DDR3 SO-DIMM
	\| date = December 2012 \| access-date = 2015-06-26
	\| website = nanya.com \| format = PDF
	\| page = 23
	}}</ref>
	* 260-pin SO-DIMMs ([[DDR4 SDRAM]]), {{convert\|69.6\|mm\|in\|abbr=in}} wide and {{convert\|30\|mm\|in\|abbr=in}} high, making them {{convert\|2\|mm\|in\|abbr=in}} wider than DDR3 SO-DIMMs, with a single notch after pin 144.<ref>{{cite web
	\| url = http://www.micron.com/-/media/documents/products/data%20sheet/modules/sodimm/ddr4/asf18c1gx72hz.pdf
	\| archive-url = https://web.archive.org/web/20141129035318/http://www.micron.com/-/media/documents/products/data%20sheet/modules/sodimm/ddr4/asf18c1gx72hz.pdf
	\| title = DDR4 SDRAM SO-DIMM (MTA18ASF1G72HZ, 8 GB) Datasheet
	\| date = 2014-09-10 \| access-date = 2015-06-26 \| archive-date = 2014-11-29
	\| publisher = [[Micron Technology]] \| page = 18
	}}</ref>
	* 260-pin SO-DIMMs ([[UniDIMM]]), {{convert\|69.6\|mm\|in\|abbr=in}} wide and {{convert\|30\|mm\|in\|abbr=in}} or {{convert\|20\|mm\|in\|abbr=in}} high, with a single notch placed differently than on DDR3 SO-DIMMs.<ref>{{cite web
	\|url = https://intel.activeevents.com/sf14/connect/fileDownload/session/088B5032E176191914DF467EAE7171BB/SF14_SPCS009_102f.pdf
	\|title = DDR4: The Right Memory for Your Next Server and High-End Desktop System
	\|date = 2014-09-16
	\|access-date = 2015-06-26
	\|author1 = Geof Findley
	\|author2 = Becky Loop
	\|publisher = [[Intel]]
	\|website = intel.activeevents.com
	\|page = 28
	\|url-status = dead
	\|archive-url = https://web.archive.org/web/20141217001811/https://intel.activeevents.com/sf14/connect/fileDownload/session/088B5032E176191914DF467EAE7171BB/SF14_SPCS009_102f.pdf
	\|archive-date = 2014-12-17
	}}</ref><ref>{{cite web
	\| url = http://www.techpowerup.com/205231/how-intel-plans-to-transition-between-ddr3-and-ddr4-for-the-mainstream.html
	\| title = How Intel Plans to Transition Between DDR3 and DDR4 for the Mainstream
	\| date = 2014-09-14 \| access-date = 2015-06-26
	\| website = techpowerup.com
	}}</ref>

	=== Variants of 200-pin SO-DIMMs ===
	The 200-pin SO-DIMM can be of the types DDR and DDR2. In both cases the notch is located at one fifth of the board length (20 pins + notch + 80 pins), but in DDR2 the notch is located slightly closer to the center of the board. These two types of memory are not interchangeable. The different notch locations are designed to prevent cross-installation, aiding at the same time in visually identifying 200-pin SO-DIMM modules.<ref name="custhelp" />

	This variance is designed to prevent coupling of memory and controllers of different DDR generations due to electrical incompatibility. DDR SO-DIMMs operate at 2.5 V while DDR2 SO-DIMMs operate at 1.8 V.<ref>{{cite web
	\| url = http://www.integralmemory.com/faq/can-i-mix-ddr-ddr2-and-ddr3-modules-my-pc
	\| title = DRAM{{Snd}} Can I mix DDR, DDR2 and DDR3 modules-my PC?
	\| access-date = 2015-06-26
	\| website = integralmemory.com
	}}</ref>

	=== Variants of DDR3 SO-DIMMs ===
	These modules, while using the same physical layout, may differ in the specified voltage{{Snd}} 1.5 or 1.35 volts. The lower voltage modules are sometimes, but not always, identified as '''DDR3L'''{{Snd}} see also [[DDR3 SDRAM#DDR3L and DDR3U extensions\|DDR3 SDRAM]].

	== {{Anchor\|SO-CDIMM}}General characteristics ==
	200-pin and 204-pin SO-DIMMs are {{Convert\|67.6\|mm\|in\|abbr=in}} long, {{Convert\|31.75\|mm\|in\|abbr=in}} wide, having a maximum total depth of {{Convert\|3.8\|mm\|in\|abbr=in}}.<ref>[http://download.micron.com/pdf/toolbox/SODIMMDesignStand_rev1.pdf micron.com – 200 Pin, PC2700 DDR SDRAM Unbuffered SO–DIMM REFERENCE DESIGN SPECIFICATION] {{webarchive\|url=https://web.archive.org/web/20100923081016/http://download.micron.com/pdf/toolbox/SODIMMDesignStand_rev1.pdf \|date=2010-09-23 }} page 26</ref>

	SO-DIMMs are nearly equal in power and voltage rating to DIMMs; SO-DIMM technology does not mean lower performance compared to larger DIMMs. For example, DDR3 SO-DIMMs provide clock speeds such as 533 MHz (1066 MT/s, [[DDR3 SDRAM#JEDEC standard modules\|PC3-8500]]), [[CAS latency\|CAS latencies]] such as 7, and higher capacities such as 4 GB per module.<ref>{{cite web\|url=http://www.corsair.com/en/cm3x4gsd1066\|title=Corsair Memory{{Snd}} 4 GB DDR3 SODIMM Memory (CM3X4GSD1066)\|work=corsair.com\|access-date=1 October 2015}}</ref>

	DDR2 SO-DIMM memory modules commonly have clock speeds from 200 MHz upward ([[DDR2 SDRAM#Specification standards\|specifications]]). 204-pin SO-DIMMs can also contain DDR3 SDRAM, with specifications such as PC3-6400, PC3-8500, PC3-10600, PC3-14900 and PC3-17000.<ref>{{cite web\|url=https://www.jedec.org/standards-documents/docs/module-42018\|title=204-Pin DDR3 SDRAM Unbuffered SODIMM Design Specification}}</ref> 260-pin [[UniDIMM]]s contain DDR3 or DDR4 SDRAM depending on configuration. Some SO-DIMMs provide [[ECC memory\|ECC]] functionality; [[Unbuffered memory\|unbuffered]] ECC SO-DIMMs are called ''SO-CDIMMs''.<ref>{{cite web\|url=http://www.rampedia.com/index.php/define-so-cdimm \|title=Define-SO-CDIMM \|publisher=RAMpedia \|access-date=2014-08-24}}</ref>

	== Inserting and removing SO-DIMMs ==
	[[File:Sodimm insertion.png\|thumb\|SO-DIMM insertion procedure]]
	[[File:Sodimm removal.png\|thumb\|SO-DIMM removal procedure. Gently spread the two metal clips outward, away from the module (red arrow's direction)]]
	SO-DIMM modules and slots are keyed, so modules can only be inserted in one orientation. Simply flip the module over if needed to align. To insert a SO-DIMM module into the slot, gently insert it at approximately a 30-degree angle upwards, until the module's metal contacts disappear into the slot. Then, gently press the module downwards (to a flat position parallel with the computer board) until it clicks into place. On both sides, the slot's metal arms will spread automatically and click into the side notches on the SO-DIMM module. To remove the SO-DIMM module, gently spread the two metal clips outward (away from the module). The SO-DIMM will be released and "pop up" at the same 30-degree angle, and can be pulled out. Inserting and removing SO-DIMMs requires only gentle force, and no tools should be needed.

	== See also ==
	{{Portal\|Electronics}}

	{{Div col\|colwidth=25em}}
	* [[Dual in-line package]] (DIP)
	* [[Memory scrambling]]
	* [[Memory geometry]]{{snd}} logical configuration of RAM modules (channels, ranks, banks, etc.)
	* [[RDRAM\|Rambus in-line memory module]] (RIMM)
	* [[Single in-line memory module]] (SIMM)
	* [[Single in-line package]] (SIP)
	* [[Zig-zag in-line package]] (ZIP)
	{{Div col end}}

	== References ==
	{{Reflist\|30em}}

	{{Commons category\|SO-DIMM}}
	{{DRAM}}

	[[Category:Computer memory form factor]]

KelleyCook: WP:EL

2022-03-23T11:28:07Z

WP:EL

← Previous revision		Revision as of 11:28, 23 March 2022
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	{{Reflist\|30em}}		{{Reflist\|30em}}

	== External links ==
	{{Commons category\|SO-DIMM}}		{{Commons category\|SO-DIMM}}

	* [http://www.memorydepot.com/guide_install.asp How to Install PC Memory Guides]
	* [http://smallformfactors.opensystemsmedia.com/articles/ruggedizing-ram-industrial-systems/ Ruggedizing RAM for industrial systems] (XR-DIMM form factor)

	{{DRAM}}		{{DRAM}}

JPxG: Reverted good faith edits by 68.147.36.60 (talk): Don't remove references if the links are dead, they can be retrieved from archives.

2022-01-01T09:07:42Z

Reverted good faith edits by 68.147.36.60 (talk): Don't remove references if the links are dead, they can be retrieved from archives.

← Previous revision		Revision as of 09:07, 1 January 2022
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	\| website = memorytesters.com		\| website = memorytesters.com
	}}</ref>		}}</ref>
	* 144-pin SO-DIMMs ([[SDR SDRAM]]) have a single notch near the center.		* 144-pin SO-DIMMs ([[SDR SDRAM]]) have a single notch near the center.<ref>{{cite web
			\| url = http://www.micron.com/~/media/documents/products/data-sheet/modules/sodimm/sdf16c32_64x64hg.pdf
			\| title = Small-outline SDRAM module (MT16LSDF3264(L)H 256 MB and MT16LSDF6464(L)H 512 MB) Datasheet
			\| date = 2006-05-03 \| access-date = 2015-06-26
			\| publisher = [[Micron Technology]] \| page = 22
			}}</ref>
	* 200-pin SO-DIMMs ([[DDR SDRAM]] or [[DDR2 SDRAM]]) have a single notch nearer to one side.<ref>{{cite web\|url=http://www.smartm.com/files/salesLiterature/dram/ddr.pdf\|title=DDR DIMM & SODIMM Modules (184-pin DDR DIMM, 100-pin DDR DIMM, and 200-pin DDR SO-DIMM modules)\|year=2011\|website=smartm.com\|page=4\|archive-url=https://web.archive.org/web/20160305221427/http://www.smartm.com/files/salesLiterature/dram/ddr.pdf\|access-date=2015-06-26\|archive-date=2016-03-05}}</ref> The exact location of this notch varies (read below).		* 200-pin SO-DIMMs ([[DDR SDRAM]] or [[DDR2 SDRAM]]) have a single notch nearer to one side.<ref>{{cite web\|url=http://www.smartm.com/files/salesLiterature/dram/ddr.pdf\|title=DDR DIMM & SODIMM Modules (184-pin DDR DIMM, 100-pin DDR DIMM, and 200-pin DDR SO-DIMM modules)\|year=2011\|website=smartm.com\|page=4\|archive-url=https://web.archive.org/web/20160305221427/http://www.smartm.com/files/salesLiterature/dram/ddr.pdf\|access-date=2015-06-26\|archive-date=2016-03-05}}</ref> The exact location of this notch varies (read below).
	* 204-pin SO-DIMMs ([[DDR3 SDRAM]]) have a single notch closer to the center than on 200-pin SO-DIMMs.<ref>{{cite web		* 204-pin SO-DIMMs ([[DDR3 SDRAM]]) have a single notch closer to the center than on 200-pin SO-DIMMs.<ref>{{cite web

68.147.36.60: /* Visual identification */ 144-pin SO-DIMM reference URL was dead. I removed it.

2022-01-01T09:05:16Z

Visual identification: 144-pin SO-DIMM reference URL was dead. I removed it.

← Previous revision		Revision as of 09:05, 1 January 2022
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	\| website = memorytesters.com		\| website = memorytesters.com
	}}</ref>		}}</ref>
	* 144-pin SO-DIMMs ([[SDR SDRAM]]) have a single notch near the center.~~<ref>{{cite web~~		* 144-pin SO-DIMMs ([[SDR SDRAM]]) have a single notch near the center.
	\| url = http://www.micron.com/~/media/documents/products/data-sheet/modules/sodimm/sdf16c32_64x64hg.pdf
	\| title = Small-outline SDRAM module (MT16LSDF3264(L)H 256 MB and MT16LSDF6464(L)H 512 MB) Datasheet
	\| date = 2006-05-03 \| access-date = 2015-06-26
	\| publisher = [[Micron Technology]] \| page = 22
	}}</ref>
	* 200-pin SO-DIMMs ([[DDR SDRAM]] or [[DDR2 SDRAM]]) have a single notch nearer to one side.<ref>{{cite web\|url=http://www.smartm.com/files/salesLiterature/dram/ddr.pdf\|title=DDR DIMM & SODIMM Modules (184-pin DDR DIMM, 100-pin DDR DIMM, and 200-pin DDR SO-DIMM modules)\|year=2011\|website=smartm.com\|page=4\|archive-url=https://web.archive.org/web/20160305221427/http://www.smartm.com/files/salesLiterature/dram/ddr.pdf\|access-date=2015-06-26\|archive-date=2016-03-05}}</ref> The exact location of this notch varies (read below).		* 200-pin SO-DIMMs ([[DDR SDRAM]] or [[DDR2 SDRAM]]) have a single notch nearer to one side.<ref>{{cite web\|url=http://www.smartm.com/files/salesLiterature/dram/ddr.pdf\|title=DDR DIMM & SODIMM Modules (184-pin DDR DIMM, 100-pin DDR DIMM, and 200-pin DDR SO-DIMM modules)\|year=2011\|website=smartm.com\|page=4\|archive-url=https://web.archive.org/web/20160305221427/http://www.smartm.com/files/salesLiterature/dram/ddr.pdf\|access-date=2015-06-26\|archive-date=2016-03-05}}</ref> The exact location of this notch varies (read below).
	* 204-pin SO-DIMMs ([[DDR3 SDRAM]]) have a single notch closer to the center than on 200-pin SO-DIMMs.<ref>{{cite web		* 204-pin SO-DIMMs ([[DDR3 SDRAM]]) have a single notch closer to the center than on 200-pin SO-DIMMs.<ref>{{cite web

68.196.165.213: /* Inserting and removing SO-DIMMs */ add comma

2021-12-20T00:52:06Z

Inserting and removing SO-DIMMs: add comma

← Previous revision		Revision as of 00:52, 20 December 2021
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	[[File:Sodimm insertion.png\|thumb\|SO-DIMM insertion procedure]]		[[File:Sodimm insertion.png\|thumb\|SO-DIMM insertion procedure]]
	[[File:Sodimm removal.png\|thumb\|SO-DIMM removal procedure. Gently spread the two metal clips outward, away from the module (red arrow's direction)]]		[[File:Sodimm removal.png\|thumb\|SO-DIMM removal procedure. Gently spread the two metal clips outward, away from the module (red arrow's direction)]]
	SO-DIMM modules and slots are keyed, so modules can only be inserted in one orientation. Simply flip the module over if needed to align. To insert a SO-DIMM module into the slot, gently insert it at approximately a 30-degree angle upwards, until the module's metal contacts disappear into the slot. Then, gently press the module downwards (to a flat position parallel with the computer board) until it clicks into place. On both sides, the slot's metal arms will spread automatically and click into the side notches on the SO-DIMM module. To remove the SO-DIMM module, gently spread the two metal clips outward (away from the module). The SO-DIMM will be released and "pop up" at the same 30-degree angle and can be pulled out. Inserting and removing SO-DIMMs requires only gentle force, and no tools should be needed.		SO-DIMM modules and slots are keyed, so modules can only be inserted in one orientation. Simply flip the module over if needed to align. To insert a SO-DIMM module into the slot, gently insert it at approximately a 30-degree angle upwards, until the module's metal contacts disappear into the slot. Then, gently press the module downwards (to a flat position parallel with the computer board) until it clicks into place. On both sides, the slot's metal arms will spread automatically and click into the side notches on the SO-DIMM module. To remove the SO-DIMM module, gently spread the two metal clips outward (away from the module). The SO-DIMM will be released and "pop up" at the same 30-degree angle, and can be pulled out. Inserting and removing SO-DIMMs requires only gentle force, and no tools should be needed.

	== See also ==		== See also ==

Ctify: /* Inserting and removing SO-DIMMs */

2021-12-18T15:52:55Z

Inserting and removing SO-DIMMs

← Previous revision		Revision as of 15:52, 18 December 2021
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	== Inserting and removing SO-DIMMs ==		== Inserting and removing SO-DIMMs ==
	[[File:Sodimm insertion.png\|thumb\|SO-DIMM insertion procedure]]		[[File:Sodimm insertion.png\|thumb\|SO-DIMM insertion procedure]]
	[[File:Sodimm removal.png\|thumb\|SO-DIMM removal procedure]]		[[File:Sodimm removal.png\|thumb\|SO-DIMM removal procedure. Gently spread the two metal clips outward, away from the module (red arrow's direction)]]
	SO-DIMM modules and slots are keyed, so modules can only be inserted in one orientation. Simply flip the module over if needed to align. To insert a SO-DIMM module into the slot, gently insert it at approximately a 30-degree angle upwards, until the module's metal contacts disappear into the slot. Then, gently press the module downwards (to a flat position parallel with the computer board) until it clicks into place. On both sides, the slot's metal arms will spread automatically and click into the side notches on the SO-DIMM module. To remove the SO-DIMM module, gently spread the two metal clips outward (away from the module). The SO-DIMM will be released and "pop up" at the same 30-degree angle and can be pulled out. Inserting and removing SO-DIMMs requires only gentle force, and no tools should be needed.		SO-DIMM modules and slots are keyed, so modules can only be inserted in one orientation. Simply flip the module over if needed to align. To insert a SO-DIMM module into the slot, gently insert it at approximately a 30-degree angle upwards, until the module's metal contacts disappear into the slot. Then, gently press the module downwards (to a flat position parallel with the computer board) until it clicks into place. On both sides, the slot's metal arms will spread automatically and click into the side notches on the SO-DIMM module. To remove the SO-DIMM module, gently spread the two metal clips outward (away from the module). The SO-DIMM will be released and "pop up" at the same 30-degree angle and can be pulled out. Inserting and removing SO-DIMMs requires only gentle force, and no tools should be needed.

Ctify: /* Inserting and removing SO-DIMMs */

2021-12-18T15:51:29Z

Inserting and removing SO-DIMMs

← Previous revision		Revision as of 15:51, 18 December 2021
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	== Inserting and removing SO-DIMMs ==		== Inserting and removing SO-DIMMs ==
	[[File:Sodimm insertion.png\|thumb\|SO-DIMM insertion procedure]]		[[File:Sodimm insertion.png\|thumb\|SO-DIMM insertion procedure]]
			[[File:Sodimm removal.png\|thumb\|SO-DIMM removal procedure]]
	SO-DIMM modules and slots are keyed, so modules can only be inserted in one orientation. Simply flip the module over if needed to align. To insert a SO-DIMM module into the slot, gently insert it at approximately a 30-degree angle upwards, until the module's metal contacts disappear into the slot. Then, gently press the module downwards (to a flat position parallel with the computer board) until it clicks into place. On both sides, the slot's metal arms will spread automatically and click into the side notches on the SO-DIMM module. To remove the SO-DIMM module, gently spread the two metal clips outward (away from the module). The SO-DIMM will be released and "pop up" at the same 30-degree angle and can be pulled out. Inserting and removing SO-DIMMs requires only gentle force, and no tools should be needed.		SO-DIMM modules and slots are keyed, so modules can only be inserted in one orientation. Simply flip the module over if needed to align. To insert a SO-DIMM module into the slot, gently insert it at approximately a 30-degree angle upwards, until the module's metal contacts disappear into the slot. Then, gently press the module downwards (to a flat position parallel with the computer board) until it clicks into place. On both sides, the slot's metal arms will spread automatically and click into the side notches on the SO-DIMM module. To remove the SO-DIMM module, gently spread the two metal clips outward (away from the module). The SO-DIMM will be released and "pop up" at the same 30-degree angle and can be pulled out. Inserting and removing SO-DIMMs requires only gentle force, and no tools should be needed.