This is a Nvidia Geforce GTX "Battlebox" 2 Way Spaced SLI Bridge.
Increase your performance with GeForce® GTX™ SLI Bridges.
Take your gaming performance to a whole new level with GeForce GTX SLI Bridges. Enjoy fast, smoothly scaled performance by connecting multiple GeForce GTX cards featuring NVIDIA SLI technology.
Supported Graphics Cards
These advanced bridges are designed for GeForce GTX cards with SLI support (GeForce GTX 770, GTX 780, GTX 780 Ti, GTX TITAN, GTX TITAN Black, GTX 970 and GTX 980). The SLI Bridge LED is supported on NVIDIA reference designs. The LED Visualizer requires GeForce Experience™ version 1.7 or higher.
MINIMUM SYSTEM REQUIREMENTS
• Microsoft Windows 7 32-bit and 64-bit
• Microsoft Windows 8 32-bit and 64-bit
An SLI motherboard is required for all SLI configurations. NVIDIA recommends a PCI-E 2.0 x16 motherboard for the best performance. Please make sure you have updated your motherboard BIOS to the latest version.
Dual-GPU graphics cards such as GeForce GTX TITAN Z cards do not require an SLI motherboard and work on all compatible motherboards.
2 GB is required (4 GB is recommended for 64-bit operating systems).