Kensington Expert Usb Trackball for Pc Or Mac Wired Optical Mouse (USB, Black)

Work in comfort with a stable, sculpted trackball that supports your hand and lets you rest your arm.

USB 3.0 for Extreme Transfer Speeds:When used with a USB 3.0 port, the SanDisk Extreme PRO USB 3.0 Flash Drive enables you to transfer large, memory-intensive files up to 60 times faster than standard USB 2.0 drives. For example, you can transfer a full-length movie to the SanDisk Extreme PRO USB 3.0 Flash Drive in seconds, or 1,000 photos in less than 35 seconds**Based on 1.2GB video transfer (MP4) and 3.6GB transfer of photos (avg. file 3.8MB) with USB 3.0 host device. Results may vary based on host device, file attributes and other factors.. The drive delivers read speeds of up to 260MB/s**Up to 240MB/s write speed to drive, up to 60 times faster than standard USB 2.0 drives (4MB/s); up to 260MB/s read speed. USB 3.0 port required. Based on internal testing; performance may be lower depending upon host device. 1MB=10,00,000 bytes. and write speeds of up to 240MB/s**Up to 240MB/s write speed to drive, up to 60 times faster than standard USB 2.0 drives (4MB/s); up to 260MB/s read speed. USB 3.0 port required. Based on internal testing; performance may be lower depending upon host device. 1MB=10,00,000 bytes. for exceptionally fast performance.128GB of Storage for Photos, Videos, and More:Thanks to the SanDisk Extreme PRO USB 3.0 Flash Drive's generous 128GB**1GB=1,000,000,000 bytes. Actual user storage less. of data storage space, you can carry your entire media library with you in your pocket. Enjoy photos, MP3 files, digital movies, and other media wherever you are?and keep it all safe?with the SanDisk Extreme PRO USB 3.0 Flash Drive