Internal slots
The following table lists the internal slots of your Precision 7875 Tower.
Table 8. Internal slots
Description Values
Expansion slots
● One full-height Gen5 PCIe x16 slot
● One full-height Gen4 PCIe x16 slot
● Two full-height Gen4 PCIe x8 slots, open-ended
● One full-height Gen5 PCIe x8 slot, open-ended
● One full-height Gen4 PCIe x8 slot (x4 electrical), open-
ended
SATA/SAS
● Two SATA 3.0 slots for 3.5-inch/2.5-inch hard drives
● Two SATA 3.0 slots for externally facing storage flex bays
● One SATA 3.0 slot for optical drive
M.2
● Two M.2 2230/2280 slots for PCIe NVMe Gen4 solid state
drives
● Two M.2 2230/2280 slots for externally facing PCIe NVMe
Gen4 storage flex bays
NOTE: To learn more about the features of different
types of M.2 cards, search in the Knowledge Base
Resource at www.dell.com/support.
Ethernet
The following table lists the wired Ethernet Local Area Network (LAN) specifications of your Precision 7875 Tower.
Table 9. Ethernet specifications
Description Values
Model number
● Realtek RTL8111-EPP
● Marvell AQC113-B1-C
Transfer rate
● Realtek RTL8111-EPP, 1G
● Marvell AQC113-B1-C, 10G
Wireless module
The following table lists the Wireless Local Area Network (WLAN) module that is supported on your Precision 7875 Tower.
Table 10. Wireless module specifications
Description Values
Model number
Qualcomm WCN6856-DBS
Transfer rate
3571 Mbps
Frequency bands supported
2.4 GHz/5 GHz/6 GHz
NOTE: The 6 GHz frequency is supported on computers
installed with Windows 11 operating system only.
Specifications of Precision 7875 Tower 19
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