Sanwa USB 3.0 to Display Port adapter 500-KC009DP on sale in Japan
Sanwa was released USB-Display Port video converter adapter called 500-KC009DP. Priced at 10,800 yen, about 88 united states dollars, the Sanwa 500-KC009DP can output 4k 3,840 × 2,160 resolution at 30Hz refresh rate. Body size is 44 × 75.5 × 14mm (width × depth × height) and weighs about 34 grams.
Sanwa 500-KC009DP USB 3.0 to Display Port adapter can be used for mirroring a single display to two displays. Alternatively you can use it to extend your screen real estate so both modes are possible.
Sanwa 500-KC009DP is powered by standard USB port that is capable of supplying 370 mAh power. Supported operating systems are Windows 8 (32 bit / 64 bit) and Windows 7 (32 / 64 bit).
Sanwa USB 3.0 to Display Port adapter : Product introduction
It is also possible to output 4k content from a non-compatible computer.