Bmax B4 Plus

Updated on January 26, 2026

The BMAX B4 Plus Mini PC represents a thoughtful approach to budget computing, combining the efficient Intel N100 processor with a feature that sets it apart from the competition: a dedicated 2.5-inch SATA expansion bay. While many ultra-compact N100 mini PCs sacrifice storage flexibility for the smallest possible footprint, the B4 Plus prioritizes expandability without dramatically increasing its size. This makes it an attractive option for users who need more than cloud storage or a single drive can provide, whether for home servers, media libraries, or workstations requiring local data redundancy. With 16GB of DDR4 RAM and a 512GB NVMe SSD included out of the box, the B4 Plus arrives ready to handle everyday computing tasks while offering a clear upgrade path for storage-hungry users.

Pros and Cons of the BMAX B4 Plus

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Bmax B4 Plus Comparison Chart

	Bmax B4 Plus
Price	List Price: $159.99 Amazon Prices: Loading prices...
Version	16GB/512GB/Intel N100
Perfomance Rating	5.0
Operating System	Windows 11 Pro
Processor	Quad-core 3.40 Ghz (max 3.40 Ghz) Intel Processor N100
GPU	Integrated Intel UHD Graphics
RAM	16 GB
Internal Storage	512 GB
Dimensions width x length x thickness	4.4 x 4.92 x 1.85 inches (111.76 x 124.97 x 46.99 mm)
Weight	0.7 lbs (0.32 kg)
WiFi	Wi-Fi 5 (802.11ac)
Bluetooth	Bluetooth 4.2
Ethernet	1 Ethernet port at 1 Gbps
HDMI	2 Full-Size HDMI Ports
DisplayPort	DisplayPort over USB-C
VGA	No VGA Ports
USB Ports	2 USB 2.0, 2 USB 3, 1 USB-C
Thunderbolt Ports	No
Internal SATA Ports	1 SATA port, includes 2.5" drive bay (Dedicated 2.5-inch SATA bay for additional storage expansion)
Card Reader	No Card Reader
Headphone Jack	combo
Fanless	No
VESA Mount	Yes
In the Box	Mini PC, Power Adapter, HDMI Cable, VESA Mount Kit, Manual
Expandability	Single RAM slot (16GB max), M.2 2280 slot, dedicated 2.5-inch SATA bay for secondary drive

Detailed Information on the BMAX B4 Plus

The BMAX B4 Plus builds on the Intel N100 platform that has become the standard for budget mini PCs, but adds meaningful storage expansion capabilities that justify its slightly larger footprint. The Intel Processor N100 brings four efficient cores running at up to 3.4GHz, delivering reliable performance for office productivity, web browsing, and media playback. The 16GB of DDR4 RAM in a single-channel configuration handles multitasking adequately for most workloads, though the single RAM slot means this is the maximum memory capacity. Keep in mind that rising DRAM prices have pushed N100-class mini PCs above their 2024 pricing, so checking current costs is advisable. For everyday computing tasks like document editing, email, and video streaming, the N100 provides responsive performance without the power consumption or heat output of more powerful processors.

What distinguishes the B4 Plus from compact competitors is its internal layout prioritizing expandability. The dedicated 2.5-inch SATA bay accepts standard laptop hard drives or SSDs up to several terabytes, transforming the mini PC from a simple desktop replacement into a capable storage solution. Users building home servers, NAS systems, or local backup solutions will appreciate this feature, as it allows combining the speed of the included NVMe drive for the operating system with high-capacity mechanical storage for data. The M.2 2280 slot housing the included 512GB SSD can also be upgraded to larger NVMe drives, providing multiple paths for storage expansion. Living Linux’s teardown reveals that accessing internal components requires only standard Phillips screwdrivers, with well-positioned screws that suggest BMAX designed the system with upgradeability in mind.

Connectivity on the B4 Plus covers essential needs without reaching premium territory. The dual HDMI ports support up to 4K 60Hz output, enabling dual-monitor productivity setups or a single high-resolution display. The front panel offers two USB 3.0 ports and a USB Type-C port for fast peripheral connections, while two USB 2.0 ports on the rear handle keyboards, mice, and other legacy devices. Gigabit Ethernet provides reliable wired networking, though the absence of 2.5GbE may disappoint users planning network-intensive applications. The WiFi 5 and Bluetooth 4.2 wireless capabilities are functional but dated compared to competitors offering WiFi 6 and Bluetooth 5.x. A combo audio jack rounds out the physical connectivity.

The thermal design employs active cooling with visible ventilation on the chassis. While not fanless, the B4 Plus maintains reasonable noise levels during typical operation. The plastic construction keeps weight under a pound and cost down, though it may feel less premium than metal-bodied alternatives. The included VESA mount bracket enables clean installation behind monitors, transforming any display into an all-in-one workstation. At approximately 4.4 x 4.92 x 1.85 inches, the B4 Plus is noticeably larger than ultra-compact N100 systems but remains far smaller than traditional desktop towers while offering capabilities they lack.

Reviewer Insights on the BMAX B4 Plus

Living Linux’s Teardown Perspective

Living Linux provides an excellent hands-on unboxing and teardown that reveals the B4 Plus’s internal design philosophy. The reviewer immediately identifies the 2.5-inch SATA bay as the key differentiator, noting “This one also has a slot for a 2.5 inch drive,” which sets it apart from ultra-compact competitors. The teardown shows accessible screw placement and straightforward disassembly, with the reviewer observing that “The screws are accessible, probably to make it easier to install the 2.5 inch drive.” This practical design consideration suggests BMAX anticipated users wanting to expand storage post-purchase.

Living Linux compares the B4 Plus favorably against smaller N100 systems for users prioritizing storage flexibility. The reviewer’s recommendation is clear: “If you really want to have a lot of storage but you still want a small computer, then this is an interesting option.” The video documents the internal layout showing the single RAM slot with 16GB module, the M.2 2280 SSD position, and the dedicated SATA connector and bay. For viewers considering the B4 Plus for Linux installations or home server applications, this teardown provides valuable insight into the hardware’s accessibility and upgrade potential. The slightly larger footprint compared to pocket-sized competitors is presented as a worthwhile trade-off for genuine storage expandability.

Mini PC Reviewer’s Assessment

According to Mini PC Reviewer, the BMAX B4 Plus “delivers solid performance for everyday computing, offering good value through its energy-efficient Intel processor and triple 4K display support.” The review highlights the device’s energy efficiency, noting power consumption of approximately 10-15 watts during typical operation, making it suitable for 24/7 applications like home servers or media centers. The triple display support through dual HDMI and USB-C earns praise as a productivity feature, enabling three independent monitors for workflow-intensive users.

The review identifies some limitations alongside the strengths. WiFi 5 performance is described as “inconsistent” in some scenarios, and the fixed RAM configuration limits future upgradeability. Windows update issues affecting some users are mentioned as a potential concern. However, the reviewer emphasizes that “The device excels in office work, streaming, and web browsing” with “fast boot times and smooth operation.” For users whose computing needs align with productivity and media consumption rather than gaming or professional workloads, the B4 Plus offers appropriate performance at its price point.

Electronikz’s High Rating

Electronikz awards the BMAX B4 Plus an impressive 9.6 out of 10 rating, with the reviewer stating it “has exceeded my expectations with its impressive speed and compact design.” The review positions the device as ideal for home office setups with multiple monitors, 4K entertainment streaming, and online learning environments. The current-generation Intel processor and adequate RAM and storage for multitasking receive specific praise, along with the compact footprint that fits any workspace.

The review acknowledges the trade-offs inherent in the design, noting “limited internal upgrade potential due to size constraints” and that “integrated graphics may disappoint serious gamers seeking dedicated GPUs.” However, for the target audience of productivity users and media consumers, these limitations are presented as acceptable given the price-to-performance ratio and the genuine expandability through the 2.5-inch SATA bay.

Customer Reviews of the BMAX B4 Plus

Customer feedback on the BMAX B4 Plus reflects appreciation for its practical approach to budget computing. Users consistently highlight the storage expansion capability as the primary reason for choosing this model over smaller alternatives. One reviewer specifically noted using the 2.5-inch bay to add a 2TB hard drive for media storage, transforming the mini PC into a capable home theater PC. The pre-installed Windows 11 Professional receives positive mentions for eliminating setup friction, while the VESA mount is praised for enabling clean, behind-monitor installations.

Power efficiency earns frequent customer appreciation, with multiple reviewers noting the low electricity consumption compared to traditional desktops. Users running the B4 Plus as always-on home servers or network devices appreciate the combination of adequate performance and minimal energy draw. The 16GB RAM configuration receives mixed feedback: while sufficient for most use cases, some users express disappointment at the inability to upgrade further. Build quality opinions vary, with some customers finding the plastic chassis adequate for its price point while others prefer metal construction. The quiet operation during typical tasks earns positive mentions, though some users report increased fan noise under sustained heavy loads.

Conclusion

The BMAX B4 Plus occupies a thoughtful niche in the budget mini PC market by prioritizing storage expandability over absolute minimalism. The dedicated 2.5-inch SATA bay genuinely differentiates it from competitors chasing the smallest possible footprint, making it the right choice for users who need local storage capacity beyond what a single drive provides. Home server builders, media library curators, and anyone requiring data redundancy in a compact system will find the B4 Plus addresses their needs where ultra-compact alternatives fall short.

The Intel N100 processor delivers the expected performance for productivity tasks and media consumption, though users should calibrate expectations accordingly. This is not a gaming machine or professional workstation, but rather a capable everyday computer that handles office work, web browsing, video streaming, and light multitasking with ease. The combination of 16GB RAM and 512GB NVMe storage provides a solid foundation, with the SATA bay offering a clear upgrade path as needs grow. The dated WiFi 5 and Bluetooth 4.2 wireless standards and single gigabit Ethernet represent compromises compared to premium options, but reflect the device’s budget positioning.

For users interested in comparing the BMAX B4 Plus with other mini PCs in its class, Starry Hope’s Mini PC Comparison Tool provides detailed specification comparisons to help identify the best match for specific requirements.