How does a pull-back RAM work

FUJITSU Desktop ESPRIMO D738

productESPRIMO D738
operating systemWindows 10 Home
Windows 10 Pro. Fujitsu recommends Windows 10 Pro.
Operating system notesCertified for SUSE Enterprise Desktop
Support of Windows 10: After the end of the product life cycle, all future releases of Windows 10 will continue to be tested and supported by FUJITSU for a maximum period of 5 years - depending on the available extension of hardware services as part of the TopUp services of the FUJITSU guarantee. You can find detailed information in the "FUJITSU Service Statement for Windows 10 Semi-Annual Channel Support" at http://support.ts.fujitsu.com.
MainboardD3601 (proprietary)
ChipsetIntel® Q370
processorIntel® Core ™ i7-9700 processor, 12 MB, 3.00 GHz, up to 4.7 GHz
Intel® Core ™ i7-8700 processor, 12 MB, 3.20 GHz, up to 4.6 GHz
Intel® Core ™ i5-9600 processor, 9 MB, 3.10 GHz, up to 4.6 GHz
Intel® Core ™ i5-8600 processor, 9 MB, 3.10 GHz, up to 4.3 GHz
Intel® Core ™ i5-9500 processor, 9 MB, 3.00 GHz, up to 4.4 GHz
Intel® Core ™ i5-8500 processor, 9 MB, 3.00 GHz, up to 4.1 GHz
Intel® Core ™ i5-9400 processor, 9 MB, 2.90 GHz, up to 4.1 GHz
Intel® Core ™ i5-8400 processor, 9 MB, 2.80 GHz, up to 4.0 GHz
Intel® Core ™ i3-9100 processor, 6 MB, 3.60 GHz, up to 4.2 GHz
Intel® Pentium® Gold G5420, 4 MB, 3.80 GHz
Intel® Celeron®-G4930 processor, 2 MB, 3.20 GHz
Supported RAM capacity (max.)64 GB, 4 memory slots DIMM (DDR4), support for dual channel, 2 memory modules must be ordered for sufficient dual-channel performance, the capacity on the individual channels must be the same, 2666 MHz can be increased to 2400, depending on the processor and memory configuration MHz can be downclocked
Total SATA5
of which eSATA2
of which SATA IIISerial ATA III (6 Gbit), NCQ, AHCI
Drives (optional)SD card reader
DVD Super Multi Ultraslim (Tray), SATA
BD Triple Writer SATA Ultra Slim (Tray), SATA
Hard disk driveHDD SATA II, 5,400 rpm, 500 GB, 2.5-inch
HDD SATA III, 7,200 rpm, 1,000 GB, 3.5-inch
HDD SATA III, 7,200 rpm, 1,000 GB, 3.5 inches, business critical
HDD SATA III, 7,200 rpm, 2,000 GB, 3.5-inch
HDD SATA III, 7,200 rpm, 500 GB, 3.5 inches
SSD PCIe, 256 GB M.2 NVMe high-end module
SSD PCIe, 256 GB M.2 NVMe module
SSD PCIe, 256 GB M.2 NVMe module, SED
SSD PCIe, 512 GB M.2 NVMe high-end module
SSD PCIe, 512 GB M.2 NVMe module
SSD PCIe, 512 GB M.2 NVMe module, SED
SSD PCIe, 1024 GB M.2 NVMe high-end module
SSD PCIe, 1024 GB M.2 NVMe module
SSD PCIe, 1024 GB M.2 NVMe module, SED
SSD SATA III, 128 GB, 2.5 inches
SSD SATA III, 256 GB, 2.5 inches
SSD SATA III, 512 GB, 2.5 inches
SSD SATA III, 1024 GB, 2.5 inches
Drive bays1 x 2.5 inch bays
1 x 3.5-inch internal bays
1 x 5.25-inch external bays
Slots1 x PCI-Express 3.0 x4 (mech. X16)
1 x PCI-Express 3.0 x16
Interfaces1 x audio: line input
1 x audio: line output
1 x front audio: headphones
1 x front audio: microphone
4 x USB 3.1 Gen1 (USB 3.0) total
3 and 1 optionally via add-on card x USB 3.1 Gen2 total
6 x USB 2.0 total
2 x USB 2.0; 2 x USB 3.1 (Gen2); 1 x USB 3.1 (Gen2) Type C x USB on the front
2 x USB 2.0; 4 x USB 3.0; optional: additionally 1 x USB 3.1 Type C (Gen2) via add-on card x USB on the rear
2 x USB 2.0 x USB internal
optional: via adapter card x VGA
1 x Ethernet (RJ-45)
1 (DVI-D) x DVI
1 (optional) x eSATA
2 x DisplayPort
2 x mouse / keyboard (PS / 2)
graphicIntel® UHD Graphics 610, Intel® UHD Graphics 630
Audio typeRealtek ALC671
communication10/100/1000 MBit / s Intel® I219V
Weight5 kg
Dimensions (W x D x H)313 x 286 x 89 mm
12.32 x 11.26 x 3.51 in
Power Efficiency NoticeEnergy efficiency of the power supply unit at 10% / 20% / 50% / 100% load at 230 V: 80% / 85% / 88% / 87%; at 115 V: 79% / 84% / 87% / 84%
Energy efficiency of the power supply unit at 10% / 20% / 50% / 100% load and 230 V: 87% / 91% / 94% / 93%; for 115 V: 86% / 90% / 92% / 90%
Special featuresMade in Germany, Low Power Active Mode, EraseDisk functionality, switching on via keyboard, service-friendly housing with EasyChange, EasyFix
Warranty period1 year (for countries in EMEIA)
Guarantee typeBring-In / On-Site Service (for countries in the EMEIA region, for all other countries depending on local regulations)