How many PCIe slots does the ASRock Rack ALTRAD8UD-1L2T motherboard have?

The ASRock Rack ALTRAD8UD-1L2T motherboard has four PCIe4.0 x16 slots.

What is the maximum memory supported by the ASRock Rack ALTRAD8UD-1L2T motherboard?

The maximum memory supported by the ASRock Rack ALTRAD8UD-1L2T motherboard is 2TB.

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ASRock Rack ALTRAD8UD-1L2T Deep Micro-ATX Server Motherboard Singel Socket (LGA 4926) Ampere Altra Max/Ampere Altra processors Dual 10G & 1G

Deep Micro-ATX (9.6" x 10.5")
Support single Socket (LGA 4926), supports Ampere Altra Max/Ampere Altra processors
Support 8 DIMM slots (1DPC), supports DDR4 288-pin RDIMM, LRDIMM
Support 4 PCIe4.0 x16*
Support 4 SlimSAS (PCIe4.0 x8)
Support 2 OCuLink (PCIe4.0 x4)
Support 2 M.2 (PCIe4.0 x4)
Support 2 RJ45 (10GbE) by Intel® X550
Support 1 RJ45 (1GbE) by Intel® i210
Remote Management (IPMI)
Support ATX PSU or 12V DC-IN