HP prodesk 400 g4 mini no wifi?

Cyber-Mav · 21 Jan 2022 at 16:38

i got hold of a HP prodesk 400 g4 mini and its got no wifi. looking inside its got space for a wifi card but no antennas. is it just the case of slapping in a wifi card and then getting some ipx to sma cables and fitting them into the case?

Journey · 21 Jan 2022 at 16:46

You can get the m.2 wi-fi module with antenna for about £4 on eBay.

Cyber-Mav · 21 Jan 2022 at 16:58

iv got a wifi module lying around that should fit. but i dont see any internal antennas available for this model. i got a various bunch of stick antennas which screw into the back of routers lying around so i could use those too. will have to give it a try with some random antenna cables from busted laptops.

Cyber-Mav · 21 Jan 2022 at 20:21

Upgraded it to 16gb ram and done bios update today. This thing is surprisingly quick. Didnt think a 35w cpu would be much but windows system response is very nippy. My old pentium sandy bridge U mini pc is considerably slower

Cyber-Mav · 21 Jan 2022 at 20:50

Anyone know if you can install a heatsink on the nvme drive in this case or will it have issues touching the components under it?

Armageus · 21 Jan 2022 at 21:19

Cyber-Mav said:
iv got a wifi module lying around that should fit. but i dont see any internal antennas available for this model.

On these it isn't an internal antenna, it's a small rectangular unit that clips to the back - notches in the top left corner of your first picture, the WiFi cables run along the left side in the gap between the motherboard and case.

If you get stuck I can take a photo when I'm back in work on Monday.

Cyber-Mav · 21 Jan 2022 at 23:23

thanks a pic would be good.
the case has some small holes at the back which looks like i can use rp sma connectors through it. will give it a try.

Cyber-Mav · 22 Jan 2022 at 08:25

Armageus said:
On these it isn't an internal antenna, it's a small rectangular unit that clips to the back - notches in the top left corner of your first picture, the WiFi cables run along the left side in the gap between the motherboard and case.

If you get stuck I can take a photo when I'm back in work on Monday.

you ever had to replace the thermal paste on these small machines? or is the stock application good enough?

Armageus · 22 Jan 2022 at 08:36

Cyber-Mav said:
you ever had to replace the thermal paste on these small machines? or is the stock application good enough?

Never had to replace it and at work ours run 24/7. Oy issue we have had us thermal throttling when the heatsinks get full of dust (as some of our machines live in particularly dusty environments)

Cyber-Mav · 22 Jan 2022 at 09:38

Mine hit 78c in linpack and was 39.8w pull on cpu for a few mins then settled to 34.4w. Somehow its going over 35w limit for short periods

Cyber-Mav · 24 Jan 2022 at 19:13

Wifi card works but the antenna cables are u.fl and i need mhf4.

Armageus · 25 Jan 2022 at 12:08

Not sure if these help at all, but this is an 800 G3, the wifi cable looks to run under the motherboard and then appears at the opposite side where it exits the back to the rectangular antenna

Cyber-Mav · 27 Jan 2022 at 18:09

got this sorted now. using rp-sma to mhf4 cables and then external antennas on the back. works excellent and the wifi speed on 5ghz band is crazy quick with very good range.