$5 OFF Coupon Code $5 Off VisionTek USB 3.0 HDMI Video Adapter 900546 USB 3.0 To HDMI Interface Now: $49.99. Get Coupon Code VSU32HC $5 off VisionTek USB 3.0 HDMI Video Adapter 900546 USB 3.0 to HDMI Interface Now: $49.99.