SIIG SuperSpeed USB 3.0 to HDMI Multi-Monitor Video Adapter (JU-H20311-S1) DisplayLink Chipset for Windows Mac up to 2560 x 1440 @ 50Hz with 512M RAM SuperSpeed USB 3.0 5Gb/s data rate. Supports high resolutions up to 2560 x 1440 @ 50Hz Video streaming support up to 1080p resolution Integrated 2-Channel & 5.1-Channel Audio Supports standard (4:3) and widescreen (16:9 & 16:10) aspect ratios Connects up to 6 adapters per system (one adapter required per monitor) Powered by Industry-recognized DisplayLink chipset Supports Windows 8 / 7 / Vista / XP, Mac OS X v10.6 and fully backwards compatible with USB 2.0 specification