Silicone goo on a secondhand motherboard - big deal, or no?

Halon

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Aug 13, 2004
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I took a gamble on a cheap-as-chips listing on eBay for a DFI SB600-C, a socket 1155 motherboard with a PCIe x16 slot and six vanilla PCI slots. It arrived in good cosmetic condition and doesn't even appear to have been previously used. I'm waiting for the RAM and CPU, and with it sitting on my work bench I couldn't help noticing a small quantity of what appears to be silicone is present near the case connectors and on a couple of components. Should I be concerned about this? Is it likely to impede operations? I've attached a few pics. Thanks for looking!
 

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Kardonxt

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I wouldn't expect any problems. From the labeling on the IO plate I expect it was a POS station or server. The POS company probably glued down the front panel, usb, etc to make sure nothing came loose in shipping.
 

Halon

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Thank you so much! I hadn't thought about that, but that's got to be the case here.
 

Rvenger

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Yes, that same crap was on a supermicro P67 board I bought a long time so. Don't remove it... it doesn't come off unless you plan on damaging the motherboard
 
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dawsonkm

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I've seen it used to stake/hold components in place for vibration applications.
 
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Azrak

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It's commonly referred to and known as silastic even when not manufactured by Dow Corning. (like how Kleenex is used to generically reference facial tissue)
 

Nobu

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Yeah, they put that stuff (looks the same anyway) between the pcb and the case of the meanwell psu I bought. Hard as a rock, and stuck firm to both.

Was going to try screwing the case to my PC's case (even if I had to drill some holes), but it felt like I would break or damage the pcb before separating the two, so I gave up. I guess they just wanted to be darn sure they were physically connected and wouldn't vibrate or short to ground...mission accomplished. lol
 

Halon

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No issue, I'd take it if I were you.
I did! Only noticed the silicone after receiving it. The build quality looks quite good otherwise and it booted right up, but the spare heatsink I had on hand was nowhere near enough for the i5-2400 I popped into it, as the CPU temperatures started reaching 66 Celsius in the BIOS. Once the heatsink/fan arrives in the mail I will put it through its paces, at least some of which will involve DOS games. Thanks for the advice, everybody!
 
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