For Dell Optiplex GX520 GX620 GX280 960 320 210L 745 755 760 / Dimension E310 3100 5100 9100 9150 9200 E510 E520 / Precision 380 390 490 690 T7400 / MT YJ221 HDD Blue Hard Drive Caddy Bracket Blue Hard Drive Caddy Dell P/N YJ221 Genuine OEM Dell part For 3.5" HDD (Desktop/SATA)