Maclocks CL88 iMac Lock Low Profile Security Lock and Swivel Plate for iMac Computer (Black) Compatible with iMac 21" & 27" Models Designed specifically for the iMac Prevents accidental knock over Low-profile, aesthetically pleasing design High security 360-degree swivel plate lock Cable-free, low-profile design Color: Black Includes 2 slim keys High security 360-degree swivel plate lock for iMac Fastening screws and plate help prevent accidental knock-over Cable-free, low-profile design Works without adhesives or alterations to iMac Includes 2 slim keys