Dell OptiPlex keyboards

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The following category covers the keyboards included as standard with Dell OptiPlex computers, notable simply for being some of the most numerous keyboards in offices around the world. In most cases at least, specific designs are sourced from two or even three manufacturers. Some examples below list only one manufacturer; other manufacturers for these designs may exist, but Dell's decision not to assign their own model numbers until recently makes it hard to locate alternative versions.

Basic keyboards

	Generation	Models	Connection
	Oval	RT7D20 (NMB) SK-8110 (Silitek)	PS/2
	Podule 1	RT7D50 (NMB) SK-8115 (Silitek)	USB
	Podule 2	L100 (Darfon) SK-8115 (Lite-On)	USB
	Low-profile 1	KB1421 (Primax) SK-8175 (Silitek) L30U (Darfon)	USB
	Low-profile 2: Dell KB212	Primax KB4021/KB4022 Silitek SK-8120	USB
	Low-profile 3, Island: Dell KB216	KB216t (Silitek)	USB

Multimedia keyboards

	Generation	Models	Connection
	Oval	RT7D00 (NMB) SK-8100 (Silitek)	PS/2
	Podule 2	SK-8135 (Lite-On)	USB
	Low-profile	KB522 (Logitech)	USB