GW-12887-1 DS12887 RTC Replacement Module by The Glitch Works on Tindie (2023)

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I bought this to replace a DS1287 in an Epson laptop.

At first the computer would work after I entered all the CMOS values. They were retained when I rebooted with Ctrl + Alt + Del but lost if I powered down. Then I bent the two pins out of the way that are on the 12887 but absent on the 1287. And voila! It works perfectly.
Dennis Fenton

Worth it

I used this in an old Tektronix TLA 704 logic analyzer, which had the 12887 soldered directly to the board (ugh). This at first seems pricey considering there are hacks to add this same functionality to an existing 12887, but the module is really nicely made and convenient and, I think, kind of cute. Heads up this seems to have the same pinout as the 12887 except for a couple pins (I think 21 and 22) which weren't there on the 12887 in my machine. I opted to bend them up to avoid doing any more unnecessary desoldering in case it didn't work. But it did! Like a charm. Unplugged the machine for a while and plugged it back in just to be sure.

Great drop in replacement

Simply the BEST option for a DS12887 replacement

Replacement battery chip modules

These chips have been used to replace dead original Dallas battery chips.
They are working just like the original chips worked. I am very pleased with their performance.

Highly recommended

This brought my VAXstation 4000/90 back to life with a minimum of fuss. This is a great solution for systems which require Dallas chips!

Worked perfectly in HP 3000

Just replaced the Dallas DS1287 in my HP 3000/927LX with this module and it worked perfectly. The system requires a working RTC to even boot, so this was a huge help in restoring this retro computer. Glitch Works shipped the parts immediately, I was shocked how fast they arrived! I could not be happier.

Brought a classic back to life

I have a really rare early dual Pentium Pro motherboard (AMI MERLIN DP). The hardest part was removing the old Dallas RTC. Once this was done, installation was a snap, and it works great.

Great seller and product

Dropped it in my 286 and it booted up like a champ. Great quality, shipping was fast, and seller was communicative - I highly recommend!

Great Replacement

Bought one of this to replace an Via vt82885n / Houston Tech ht12888a and worked like a charm. Has a good build.

Perfect replacement for retro computer RTC chips.

I used it as a replacement for ODIN OEC12C887A chip with sealed in battery that is not user replaceable. The GW-12887-1 DS12887 RTC Replacement Module was an easy replacement, works just like the original and has replaceable battery in case the one that came with dies one day. I'm glad these replacement modules are being made to keep our retro computers going.

Absolutely worth every penny. I'm am very pleased.

I have an old Pentium motherboard and the Dallas/RTC ran out of juice. It was supposed to be my MS-DOS machine and this issue complicated that. Thankfully the RTC on this motherboard was socketed. Ordered the replacement and plugged it in. The machine fired up like it was brand new. I am extremely pleased because this machine is really old. I think I received it back in 1997. Thank you.

Superb!

I was amazed to discover that someone in 2021 was making replacements for the old Dallas RTC modules. I am a vintage PC geek and was disappointed to discover that my lovely Gateway 2000 P-60 DOS PC would not even boot or see the hard drive because of a failing RTC module. Then further dismay when I realised it was not a simple matter of replacing a cell watch type battery on my board. But then along comes this GW-12887 to save the day!! works flawlessly, simple pop out pop in replacement (luckily mine was socketed) and my PC is working again and I can relive my childhood playing all those awesome DOS games I remember from my youth. Fast delivery and great service all round, awesome!

Great replacement

I've bought two to replace a DS1287 and a DS12887A. Both worked very well and the battery can be easily replaced without needing to replace the entire chip in the future.

Works as designed and as intended!

Bought this to revive a Tandy 2100 Model 10, and this did exactly that. Direct replacement and worked without any issues.

Great board for restoring a vintage computer.

Great board for restoring my vintage computer that had a bad RTC DS12887 chip. Nice and compact and fitted well.

Works in a VAXstation 4000/VLC

I bought one to replace the DS1287A in my VAXstation 4000/VLC. It works great! The DS1287A in the 4000/VLC is socketed so the replacement was quick and easy.

Recommended

Did the job after re-configuring pc setup that was lost prior to replacement due to dead battery in DS12877 module.

Worked perfectly. And very well packaged.

Nice product to revive old computers

Installed in a Commodore PC 30-III. This one actually had a DS1287 which had to be de-soldered from the motherboard, and replaced with a socket. Works as expected afterwards with this module, remembering the clock and CMOS settings.

Perfect!

Perfect replacement for our RTC in an older Hurco VMX-42 machining center. Affordable and maintainable into the future thanks to the external battery design. Absolute plug and play! Great solution to maintaining aging industrial machines!

Nicely made replacement for the Dallas chips, worked great!

Great replacement for old Dallas clock chip

Replaced DS12887 clock in an ASUS P55T2P4 Motherboard. This is a very professional solution for keeping these old boards going. Highly recommended.