Upgrade or repair your ASIC miner with this original control board motherboard, designed for high stability and compatibility with multiple Bitmain models. Compatible Models: S19, S19 Pro, S19j, S19j Pro, T19, S19a, ASIC miners. Original specification motherboard / controller, built to match factory standards for reliability and durability. Ensures stable communication with hash boards, power supply, and network for consistent mining performance. Suitable for professional mining farms and home miners seeking dependable long-term operation. Ideal for restoring hash rate, fixing boot failures, or replacing damaged boards in your mining rigs. Color: As Shown Material: plastic Package Contents: 1* Control Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.