The ElmorLabs PMD2X replaces the PMD2 with per-wire 12VHPWR measurement and a Seeed Studio XIAO socket, with an ESP32C6 included.
What’s new
Per-wire 12VHPWR measurement
The PMD2 reported the 12VHPWR connector as a whole. The PMD2X measures each wire individually. With GPUs drawing high current through a single connector, a total reading can look fine while the load is uneven across the wires. Per-wire readings let you see that imbalance directly on the OLED and in the PMD software.
Seeed Studio XIAO support
A 2×7 pin socket on the board takes Seeed Studio XIAO modules, and a XIAO ESP32C6 is included. Use it to add your own wireless connectivity and build custom monitoring or logging setups. Check out our reference code example in our latest blog post.
What carries over from the PMD2
- Every connector you’re likely to need: 2x EPS 8-pin (CPU), 3x PCIe 8-pin (GPU), 1x ATX 24-pin, 1x 12V-2×6 (12VHPWR)
- 2.4″ OLED showing total power, or power, voltage and current per channel
- USB Type-C for extended readings, logging and oscilloscope functionality
- Audible warning when the maximum current on a channel is exceeded
- On-device menu for averaging and over-current protection settings
- USB firmware updates
- Accuracy: ±0.1 V at 12 V, ±0.5 A at 10 A (maximum error)
In the box
- PMD2X board
- Acrylic case with all hardware
- 2.4″ OLED screen
- 2× EPS 8-pin output cables
- 3× PCIe 8-pin output cables
- 1× ATX 24-pin output cable
- 1× 12VHPWR output cable
- 1.0 m USB Type-C to Type-A cable
- Velcro strap
- Adjustable stand
- Seeed Studio XIAO ESP32C6
The assembled device measures 145 × 120 × 28 mm.
Software and accessories
Download the PMD software v2.0.0.3 to view and log measurements on your PC. A PMD2 Python example is available on GitHub for custom logging and automation. Recently, we’ve also push a PMD-PyCore library to PyPi for importing directly into your projects.
To measure PCIe slot power, pair the PMD2X with the ADT-Link R33G V1.4 PCIe 5.0 Slot Power Measurement Adapter for PMD for PMD ($50, sold separately).
Pricing and availability
The PMD2X is in stock now for $109 in the ElmorLabs shop. The PMD2 has been discontinued, and the PMD2X is its direct replacement.
