Protect your fleet of laptops or Chromebooks and the private information that's on them from theft with the Serialized Combination Laptop Lock 25-Pack from Kensington, the #1 Seller of Laptop Locks. A tamper-resistant lock head with push-button engagement easily attaches the T-Bar to the Kensington Security Slot found on most laptops. For IT convenience, each lock comes with a preset 4-number combination and our cloud-based Register & Retrieve program provides a fast way to enter and look up all your combinations in case any get forgotten.