The B250C BTC Mining Motherboard is a budget-focused 12-GPU mining platform that converts each PCIe 1x lane directly to a native USB 3.0 port, eliminating the need for separate riser adapter boards on the motherboard side. The 12 onboard USB 3.0 ports each carry a single PCIe 1x lane — plug a standard USB-3.0 powered riser cable directly into the board, connect a GPU at the other end, and you have a complete 1x-to-16x mining link.
Based on the Intel B250 chipset and LGA1151 socket, the board supports 6th and 7th Generation Intel Core processors (Skylake / Kaby Lake) — Pentium G3900, Celeron G3930, and similar low-TDP chips work best for mining since the CPU has minimal load during GPU mining. Two DDR4 DIMM slots support up to 32GB at 2133/2400/2666 MT/s. The board ships with mining mode enabled in the BIOS by default — power on, install drivers, and GPUs are detected automatically.
For Australian miners building cost-effective GPU rigs, the B250C is attractive because it consolidates the riser-adapter board into the motherboard itself — fewer connection points means fewer potential failure points. Drawbacks: the 6th/7th Gen Intel CPUs and DDR4 memory are now legacy parts, second-hand availability fluctuates, and the BIOS feature set is sparse compared to BIOSTAR TB360-BTC PRO 2.0. Build cost is typically lower than a TB360 build, but spare-part availability is the trade-off.
Storage includes 4 × SATA 6Gb/s, an mSATA slot, and onboard HDMI output for first-boot configuration. Power input requires ATX 24-pin + ATX 4-pin + a separate 6-pin auxiliary — make sure your PSU has all three available. The board has no native M.2 NVMe support; storage upgrades go via mSATA SSD or SATA 2.5" SSD. A licensed electrician should be consulted for dedicated mining-circuit installation in compliance with AS/NZS 3000:2018.
| Specification |
Value |
| PERFORMANCE |
| Chipset |
Intel B250 |
| Socket |
LGA1151 (100/200-series) |
| CPU Support |
Intel 6th & 7th Gen Core i3/i5/i7, Pentium, Celeron |
| Form Factor |
ATX (approx. 230 × 175 mm) |
| PCIe & GPU SUPPORT |
| GPU Slots |
12 × USB 3.0 to PCIe x1 (direct riser connection) |
| Native PCIe |
Onboard USB 3.0 outputs (no separate riser adapter required on motherboard side) |
| Max GPU Count |
Up to 12 GPUs via standard USB 3.0 powered riser cables |
| BIOS Features |
Mining mode enabled by default |
| MEMORY |
| Memory Type |
DDR4 (non-ECC) |
| Slots |
2 × DIMM |
| Max Capacity |
32GB |
| Supported Speeds |
DDR4-2133/2400/2666 MT/s |
| STORAGE |
| SATA Ports |
4 × SATA 6Gb/s |
| mSATA |
1 × mSATA slot |
| M.2 NVMe |
Not supported |
| I/O & CONNECTIVITY |
| Ethernet |
1 × Gigabit (Realtek RTL8111F) |
| USB (Rear) |
2 × USB 3.0, 4 × USB 2.0 |
| USB (Headers) |
1 × USB 3.0, 2 × USB 2.0 |
| Display Output |
1 × HDMI |
| Audio |
Realtek ALC662 (6-channel HD audio) |
| Legacy |
1 × PS/2 combo (keyboard / mouse) |
| POWER |
| Main Connector |
1 × ATX 24-pin |
| CPU |
1 × ATX 4-pin |
| Auxiliary |
1 × 6-pin PCIe (for GPU slot rail support) |
| PHYSICAL |
| Dimensions |
Approx. 230 × 175 mm |
| Weight |
Approx. 1.2 kg (board only) |
| BIOS |
AMI 64MB Flash ROM |
| IN THE BOX |
| Included |
B250C BTC mining motherboard, I/O shield, SATA cable(s), manual |
Australian Consumer Law Notice: All products sold by MinerHub come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have goods repaired or replaced if they fail to be of acceptable quality. Manufacturer warranty terms apply in addition to your statutory rights. All performance figures are manufacturer-stated typical values. MinerHub does not guarantee mining returns or profitability.
