1. dual-chip desktop chassis 7-port SB3.0 expansion card upgrade: good machine friend, you are responsible for lighting up the creativity, and it is responsible for igniting the performance of the machine 2. USB3.0 reshape high-speed transmission: satisfy your desire for speed U disk, mobile hard disk, mobile phone, etc. have entered the 3.0 transmission era, the pursuit of high-speed transmission, can no be wronged to expand 3.0 in the speed of the chassis 2.0, will It is imperative to increase the speed by 10 times. 3. Synchronous play with high-energy peripherals: You can play with many external devices such as three-headed six-arm keyboard, mouse, printer, cooling fan, disk array, etc. USB3.0 standards match each other, and the speed does not 4. Fast and stable motherboard direct connection: The thickened standard PCI-E2.0 interface gold finger is directly connected to the chassis motherboard, which can increase the stability of component connection, without transmission line loss, and direct interaction is faster. Product Description: Model: PVU3-7U Type: Riser Card Interface: USB extension HUB size: 121 x 83 x 20mm Material: Plastic colour: black Package Contents: 2 x Mounting screw 1 cord (30cm) 1 x Expansion card 1 x Chinese and English instructions Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.