All In One 3 Port USB HUB Combo MS Pro Duo Micro SD MMC M2 TF Memory Card Reader for Laptop PC blue All in one design, 3 Port USB HUB,SD MMC M2 MS Card Reader. Card Reader, supports memory card MS/MS PRO DUO/SD/MMC/M2/Micro SD(TF). LED Lights when plug into your PC. Support System: Windows 98SE/ME/2000/XP/7/Linux 2.4/Mac OS 10.0 Size: 7.7cm x 7.7cm x 3cm - 3.03inch x 3.03inch x 1.18inch.