3 ports USB 2.0 HUB with Multi-card Reader Combo for SD/MMC/M2/MS MP All In One Operation Temperature: 32~158 F/0~70C Support System: Windows 98SE/ME/2000/XP/7/Linux 2.4/Mac OS 10.0 Size: 7.5 x 3 x 7.5cm Cable length: 51cm Package Included: 1 X Combo Hub Card Reader