4GB USB 2.0 Flash Drives 50-Pack with Lanyards — BLACK 4GB*50PCS, Rotating Metal Cover, Plug & Play

Pack of fifty 4GB USB flash drives in black — ideal for storage and backup. Each stick is plug-and-play with no software to install and works when inserted into any USB port. Compatible with Windows / Linux / Mac OS and with USB 2.0 and below. Performance: read speed 15-20mbp/s and write speed about 10mbp/s. Design: the metal cover features a frosted finish that helps prevent fingerprints and rotates 360 degrees for protection and ease of use. Every drive includes a hole for attaching to a lanyard or key chain; this bulk pack comes with 50 lanyards for convenient carrying and distribution.