Bmax B2 Power
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The Bmax B2 Power is a low-cost mini PC small enough to sit in the palm of your hand. An Intel Celeron 5205U processor, 8GB of DDR4 RAM, and a 256GB NVMe SSD cover web browsing, document editing, and media streaming. HDMI 1.4 and DisplayPort 1.2 outputs drive two 4K displays at once. Inside, two M.2 slots and a 2.5-inch SATA bay give it three drive positions to fill later.
Pros and Cons
| Pros | Cons |
|---|---|
| Priced under $150 | Entry-level Celeron 5205U, two cores at 1.9GHz |
| Compact and light (0.66 lbs) | Not suitable for gaming or heavy video editing |
| Triple storage expansion (2x M.2 + 2.5” SATA bay) | 2.5” SATA cable not included in box |
| Most owners describe it as quiet in normal use | Base storage of 256GB may fill quickly |
| Dual 4K display support (HDMI + DisplayPort) | Uses older WiFi 5 technology |
| VESA mount bracket in the box | No USB4 or Thunderbolt connectivity |
Bmax B2 Power Comparison Chart
 Bmax B2 Power | |
| Price | List Price: $144.99 Amazon Prices: |
| Version | --- |
| Performance Rating | 2.2 |
| Operating System | Windows 11 Pro |
| Processor | Dual-core 1.90 Ghz Intel Celeron Processor 5205U |
| GPU | Integrated Intel UHD Graphics |
| RAM | 8 GB |
| Internal Storage | 256 GB |
| Dimensions width x length x thickness | 4.41 x 4.92 x 1.3 inches (112.01 x 124.97 x 33.02 mm) |
| Weight | 0.66 lbs (0.3 kg) |
| WiFi | Wi-Fi 5 (802.11ac) |
| Bluetooth | Bluetooth 5.0 |
| Ethernet | 1 Ethernet port at 1 Gbps |
| HDMI | 1 Full-Size HDMI Port |
| DisplayPort | 1 DisplayPort (DisplayPort 1.2) |
| VGA | No VGA Ports |
| USB Ports | 2 USB 2.0, 2 USB 3, 1 USB-C 2x USB 3.2, 2x USB 2.0, 1x USB-C |
| Thunderbolt Ports | No |
| OCuLink | No |
| Internal SATA Ports | No SATA ports |
| Card Reader | microSD Card Reader |
| Headphone Jack | combo |
| Fanless | No |
| VESA Mount | Yes |
| In the Box | Mini PC, power adapter, VESA mount bracket, user manual |
| Expandability | RAM: up to 64GB DDR4 (2x SO-DIMM slots). Storage: 2x M.2 slots (2280 NVMe + 2242 SATA/NVMe) plus 2.5" SATA bay (up to 4TB total) |
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Two M.2 Slots and a SATA Bay in a Palm-Sized Case
The case measures 4.92 x 4.41 x 1.30 inches and weighs 0.66 pounds (300 grams), so it hangs off the back of a monitor on the included VESA bracket or sits behind one. The shell mixes plastic and metal, which holds up well enough at this price and keeps the weight down.
The Celeron 5205U is a dual-core chip running at 1.9GHz, and it is built for office applications, web browsing with a stack of tabs, and 4K video playback rather than rendering or modern games. The 8GB of DDR4 RAM handles that workload, and both SO-DIMM slots are reachable, so memory can go to 64GB later. Both M.2 slots and the drive bay are user-accessible as well.
Ports cover two USB 3.2 connectors, two USB 2.0 connectors, and one USB-C. Networking runs over gigabit Ethernet or WiFi 5 (802.11ac), with Bluetooth 5.0 for keyboards and mice. Storage runs to three positions, two M.2 slots (one 2280 NVMe, one 2242 SATA/NVMe) and a 2.5-inch SATA bay, which is enough room to run a small home file server or to keep a media library local. A microSD reader handles quick file transfers.
Customer Reviews
Across 36 ratings on Amazon, the Bmax B2 Power averages 4.2 stars, and the distribution splits: 65 percent of buyers leave five stars, but 12 percent leave one. The favorable reviews describe a machine that is small, quiet, and good enough for everyday browsing and light streaming at a low price, with Windows pre-installed for a quick setup. REPOMAN1021, a verified buyer who landed at three stars, wrote that “it gets the job done for the price” and is “ok” for “basic things,” but he advised anyone planning to use it for work, streaming, or gaming to “upgrade to a better one.”
The complaints center on the processor. Verified buyer Zachary Wittenborn liked the machine for light use but warned, “This will not be able to play any games on it unless it is streamed and even then it will not be great.” Verified buyer Andres reported that “it starts well but after 5 minutes it overheats and gets super slow that you can’t use it,” while other owners described the same machine as quiet and cool-running.
Best as a Cheap Browsing and Storage Box
Home office users, students, seniors, and anyone who wants a second machine for browsing and documents are the fit here. So is an HTPC or a digital signage player, where dual 4K output and low noise matter more than clock speed, and where the box can sit behind the screen out of sight.
Gaming, video editing, and software development are out of reach for a 15W dual-core chip, and no amount of memory changes that. Drives and RAM can be added later without replacing the machine.
To weigh it against other mini PCs, Starry Hope’s Mini PC Comparison Chart lists models side by side on specifications, features, and price.
Frequently Asked Questions
What processor does the Bmax B2 Power use?
An Intel Celeron 5205U, a dual-core 10th generation Comet Lake chip running at 1.9GHz with a 15W TDP. It is built for web browsing, office work, and media playback.
Can I upgrade the RAM in the Bmax B2 Power?
Yes. There are two SO-DIMM DDR4 slots, and they accept up to 64GB.
How many monitors can the Bmax B2 Power support?
Two. The HDMI 1.4 and DisplayPort 1.2 outputs each drive a 4K display, which covers a two-screen desk setup or a home theater with a second panel.
What storage expansion options does the Bmax B2 Power offer?
Three positions: two M.2 slots (one 2280 NVMe and one 2242 SATA/NVMe) plus a 2.5-inch SATA bay, for up to 4TB of total capacity. The 2.5-inch SATA cable is not included in the box.
Is the Bmax B2 Power suitable for gaming?
Only for very casual or retro titles. The Intel UHD Graphics 610 integrated GPU and the dual-core processor are built for productivity and media playback, not demanding games or 3D applications.
How loud is the Bmax B2 Power during operation?
Most owners describe it as quiet during normal use, and several note that it runs cool. One verified buyer, however, reported it overheating and slowing down under sustained load, so thermal behavior can vary from unit to unit.
Can I mount the Bmax B2 Power behind a monitor?
Yes. A VESA mount bracket ships in the box, so the machine can sit behind any VESA-compatible monitor instead of on the desk.
Can the Bmax B2 Power be used as a home NAS?
The two M.2 slots plus the 2.5-inch SATA bay make it a reasonable candidate for a compact home NAS. The entry-level Celeron 5205U limits throughput, so it suits a light personal NAS rather than a demanding multi-user setup.