Dell N8362 JK134 GK158 Optiplex GX520 GX620 Precision XPS HDD Hard Disk Drive Caddy Compatible Part Numbers: N8362 JK134 GK158 Guaranteed Dell Genuine Part Number: JK134 Type: Hard Drive Caddy Compatible Model: Dell Optiplex SFF GX520 GX620 **Ship within 24 hours except holidays and weekends**