Mambucho

A1 (orange) and A3 (black/white) LTE, GPS/GLONASS

Received the order, the cover with antennas came in the factory box, with a double protective film. This cover is for the version with an infrared video camera. If you have a cover with a single video camera, you will need to move the cable and video camera to the new cover Not for 4K! The 4K version does not support WWAN.

https://www.ebay.com/itm/357068970082?_skw=Laptop+Back+Covers+for+Dell++precision+7680+WWAN&itmmeta=01K04YDTQDQ610QDKABHNDCVYZ&hash=item5322f81862:g:ZCQAAOSw~0RoR5Cz&itmprp=enc%3AAQAKAAAA8FkggFvd1GGDu0w3yXCmi1f8YMtuFTqUtzp2e%2FRyXTzbXC2BQi0VS4NsT8%2BvSedCyYqBSQXuxtr3zFqtJZiStEMGcewSkpYLmmjvmmx5w7Luj8OXgvuQpXKO%2BJipxg9UIZSFJMD1Kw%2F1cmYMfws5hoWMAlheRI2P2IyO9op7SEYQco0biFLH5wMH1z5IifPlyKy88Sj79NbDlKapPfo5iqCPwxWxJG335U8blKS2FOt0O4%2B%2Bch%2FmGNQmeeAbY4NlOKG4uJtnupy8ogvv6zJsjghFM0QMsiNU2Lq8osM7LYYWEpOTnsA3vOzMJqg3066WvA%3D%3D|tkp%3ABk9SR_Srt56BZg

I think that the 6400 MT won't handle the 13850HX, most likely it's for the 285HX and higher, it's written on the label. Crucial CSODIMM 16GB | Preisvergleich Geizhals EU

I'm talking about something else, why use an adapter in WWAN if you can install a 2230 SSD instead of a Wi-Fi module. If DELL allows the installation of a 2242 in WWAN, you could have bought a 2242 SSD and adapter in the store DELL, but the store only had 2230 SSDs and this instead of the AX211. Of course, we understand that to sacrifice the AX211 for an SSD, we need an alternative for wireless internet, and such a sacrifice is acceptable if we have a working WWAN option.

A thin spacer is needed when your case is not a performance one. I installed the SODIMM mechanism on a thick spacer in the performance case and everything works. Buying a thin spacer for a performance case is a waste of money.

Did you install the 2230 SSD in the WWAN via an adapter? The WWAN is 3042. The 2230 SSD can be installed instead of the Wi-Fi module.

Lubrication is needed on the shaft and on the bearing. Some fans in laptops are disassemblable; you only need to remove the top cover of the cooler, take out the blades with the shaft, and lubricate the shaft.

The letter 'C' in the abbreviation CSODIMM stands for synchronous memory, which is equipped with a new hardware component. The front side of the CSODIMM module is shown up close. In the center, under the label, is the clock generator chip from Montage.

The SUNON maglev cooler has a maximum speed of 3400 rpm, while the Delta cooler has a maximum speed of 5000 rpm.

I found the setting where you can set 5600 MT/s higher or lower in RAM, I chose that, but I didn't find how to enable XMP, the task manager still shows 5200 MT/s.

screenshot of the hidden BIOS menu DELL Precision 7680 please, and where in the menu is the XMP profile selection?

I bought Kingston FURY Impact 64GB (32*2) 5600MT/s SODIMM DDR5 memory (model KF556S40IBK2-64, supports XMP 3.0), installed it, and got a frequency drop to 5200MT/s on my device. It automatically selected the profile that is preset inside the memory from the factory; you won't be able to switch to 5600 as there is no control over these profiles in the BIOS. The CPU-Z program cannot detect the XMP profile. Forget about the idea of installing RAM with XMP support, you will not get what you want.