ZimaBlade Requires a User-Installed DDR3L SO-DIMM
The community question asked whether ZimaBlade could use DDR3, DDR3L, or DDR4 memory. Replies pointed to the 204-pin SO-DIMM slot and to the low-voltage requirement described in a community troubleshooting PDF. The document states that ZimaBlade has no onboard RAM, so a compatible module must be installed before the board can boot normally.
The PDF describes the crowdfunding configuration as a 16 GB DDR3L-1333 module, also labeled PC3L-10600S, and emphasizes 1.35 V operation. It contrasts this with ordinary 1.5 V DDR3 and notes that DDR4 uses a different 260-pin format. The safest conclusion from this source is to use DDR3L that matches the slot and voltage requirement.
The full source is available as the community ZimaBlade troubleshooting PDF. It was authored by Gavin Chester and shared in the forum thread; it should be treated as community guidance rather than a current official compatibility list.
Reseat the Memory Before Assuming the Board Is Faulty
The document advises checking that the SO-DIMM is fully seated. It describes inserting the module into the slot at roughly a 45-degree angle, pressing it firmly into the connector, and then lowering it until the retaining clips engage.
If the system does not boot, remove power before opening the enclosure or reseating components. Check the module type and voltage printed on its label, then reseat it rather than repeatedly power-cycling a loose connection.
A Red LED Does Not Prove the Board Has Correct Power
The PDF warns that the red LED only indicates that some power is reaching the board. ZimaBlade requires a USB-C Power Delivery source capable of negotiating 12 V at 3 A. A charger can have a high headline wattage and still fail if it does not offer a 12 V profile.
The author gave an 87 W MacBook charger as a non-working example because its printed profiles did not include 12 V, while a different 65 W charger that did offer 12 V was reported to work. These are author tests, not universal compatibility guarantees for every revision of those accessories.
A poor or incomplete USB-C cable can also interrupt Power Delivery negotiation. Check both the charger's output profiles and the cable rather than using total wattage alone.
USB-C Docks Need Power Pass-Through
Because the board receives power through USB-C, a dock or adapter without power pass-through cannot power it. The PDF reports that the author's Dell DA300 did not work for this purpose, while a later DA310 was reported to support pass-through. The author also tested a Selore&S-Global multiport adapter and reported video output through its HDMI and VGA ports.
Accessory behavior can vary with power profiles, cables, and revisions. These named examples are troubleshooting observations from the PDF, not an exhaustive approved-device list.
Mini DisplayPort Adapters Can Explain a Black Screen
The document identifies Mini DisplayPort adapters as another common source of confusion. A display may show the BIOS or boot manager and then go black when the operating system switches to a different resolution, refresh rate, or driver.
If the board appears to start but video disappears after the early boot screen, test a reputable adapter, another cable, and another display before concluding that the ZimaBlade itself has failed.
When to Contact Support
After confirming compatible DDR3L memory, reseating it, checking 12 V/3 A USB-C PD output, using a suitable cable, and testing the display adapter, the PDF advises contacting support@icewhale.org if the unit still does not work.
FAQ
Can ZimaBlade use ordinary 1.5 V DDR3?
The shared troubleshooting document specifies low-voltage DDR3L at 1.35 V. The thread's resolved answer was to use DDR3L rather than ordinary DDR3.
Will any high-wattage USB-C charger power ZimaBlade?
No. The charger must advertise a compatible 12 V profile and sufficient current. Total wattage alone does not prove that 12 V negotiation is available.
Why does the display work in BIOS and then go black?
The PDF suggests that the adapter or display may accept the basic boot video mode but reject the later resolution, refresh rate, or driver output.
