Asrock Rack SE550-MB/4U36 LGA3647 Motherboard Intel C621 FOR Intel Xeon CPUMB Physical StatusForm Factor :EATXDimension :12'' x 13'' (30.5 cm x 33.0 cm)Processor SystemCPU :Intel Xeon Scalable Processor Family (Max 205W)Socket :Dual Socket PChipset :Intel C621CPLD :LCMXO2_1200UHCSystem MemoryCapacity :16 DIMM slotsType :- Six Channel memory technology- Support DDR4 2666/2400 RDIMM and LRDIMMVoltage :1.2VDIMM Sizes :RDIMM: 32GB, 16GB, 8GB, 4GBLRDIMM: 64GB, 32GBExpansion SlotPCIe x16Slot1: Gen x16 link (CPU2)Slot2: Gen x16 link (CPU2)Slot3: Gen x16 link (CPU2)Slot4: Gen x16 link (CPU1)Slot6: Gen x16 link (CPU1)PCIe x8Slot5: Gen x8 link (CPU1)StorageSATA Controller:Intel C621 : 2 x SATA3 (SSATA_0/SSATA_1)M.2 :1 (PCIE X4/SATA3 from PCH (2230/2242/2260/2280))NVMe U.2 :7 (2x Slimeline x8 from CPU1, 1x Oculink x4 from CPU1, 1xSlimline x8 from PCH)System BIOSBIOS Type ：256Mb AMI UEFI Legal BIOSBIOS Features ：- Plug and Play (PnP)- ACPI 2.0 Compliance Wake Up Events- SMBIOS 2.8 Support- ASRock Rack Instant ：Operation temperature: 10°C ~ 35°C / Non operationtemperature: -40°C ~ 70°Delivery details:

1. By Airmail: Generally, delivery to USA takes about 7-15 Business days.

2. Delivery to Canada,AU, UK, and other European countries takes about 25-45 Business days.

3. If you need the item very urgently, please contact us for express shipping. We will caculate the express shipping cost for you.
Express shipping takes about 3-7 days to arrive. --If you have not got it within the shipping time,
please no hesitate to contact us.We will check it for you with the post office and customs.
Because sometimes it will be delayed for traffic or flight jams.Please do not open dispute to us. We will take responsibility to resend or refund for any lost item.

*International Buyers - Please Note:

Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer responsibility.
The Lost due to undelivered address, it is responsibility for buyer.
--Please check with your country customs office to determine how much these additional costs will be prior to offerding or purchasing.

Domestic handling time Will usually ship within 2 business days of receiving cleared payment

Return policy details :

Please send item back in original package (new and un-used, accessories included).
When warehouse receive the item in new condition, we will send refund.If your package is lost in transit to us,
we are not responsible for any loss or damages and cannot refund you,
as we don't receive the item. You can submit a claim to your shipping company directly.

Customer Service：

We strive to provide 5-star customer service!

If the goods you receive do not match what you ordered and the product is unusable,
please take photos of the relevant items and contact us directly.We will work out a solution and get back to you as soon as possible.

Any problem with order or item, please contact us first instead of leaving us Negative response, thanks!

Your understanding is highly appreciated, thank you!

We always reply to messages within1-2business days.If you do not get a response from us,then please check your message or contact us later.