Kouwell Internal 3.5inch USB 2.0 Hub 4 Ports Pack Size: 1 pack Minimum Bulk Purchase: 1 x 1 pack (1 total) USB has been designed to allow many devices to be connected in a very easy way to a PC or MAC. Most new PC's have USB, but plug-in cards can add USB Ports to older machines. The use of this hub enables a single USB connection to be expanded to as many as 4 connections. This USB Hub fits in a standard 3.5 inches Bay and has 4 external ports. Each port offers USB 1.1 and USB 2.0 compatibility so that you can experience the compatibility of the old with the blazing speed of the new! Weight: 0.30 Kg