Storage for Milk-V Mars

I placed an order recently for a Milk-V Mars 8 GB from Arace Tech. I don’t believe it comes with any eMMC (at least the item description didn’t mention it.) I read on a Vision Five forum that someone used a OrangePi 256GB eMMC module for the VF2. Does anyone have any tips on buying eMMC for the Mars? Are there different size eMMC slots? Is the Mars eMMC slot the only size? I was also considering buying a m.2 SATA SSD and putting it in an enclosure, and connecting it to the Mars via USB 3.0.

The orange pi slots have 2 connectors and the Mars only has one. I tried a cheap emmc with one connector from aliexpress that had the same connector as mars. The system does recognise the emmc but I’m unable to write anything to it. I may have a bad emmc and I’m in the process of seeing if I can get a replacement from ali express.

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All eMMC modules that can be used on VF2 can be used on Mars. Although Mars only has one card slot, its size and pin definition are the same as the eMMC connector of VF2. The card slot on the other side is only for support and is not retained on Mars.