Compatible 128MB 100-pin Memory Upgrade for HP LaserJet 1320 2300 2505 2550 2605 2700 2820 2840 3390 3392 4100 4200 4300 5100 8150 9000 (p/n C9121A, Q9121A, Q7709A)

This is great - I wish I'd done it earlier. After my printer was slow on a big job recently I decided to look for a memory upgrade. HP sells one for $143! This one is less than $10 including shipping and works perfectly. My printer is a LaserJet Wireless 1320 NW but the memory is listed for lots of others. Installing was simple. HP has great instructions with pictures on their web site. Step 1) turn it off and disconnect the power and cables. Step 2) open the print cartridge drawer. Step 3) Open the left side - it has clips at the top and bottom on the paper tray end and sort of swivels at the print cartridge end. Step 4) My machine only had its 16MB built in memory (leaving only 5MB for documents) so there was no DIMM to remove. Step 5) Turn the little cams that latch the DIMM in place to their open position. Step 6) Take the new DIMM out of its antistatic bag, holding it by the ends between your thumb and a finger. Touch your other hand to the metal of the printer to discharge, and push the DIMM into its slot making sure it is aligned properly. You can tell which way up it should go because the gold terminals are grouped and the slots are grouped the same way. It may not seem to go in at first because when you push it in it moves the cams into closed position and that takes a tiny shove. Step 7) Close up the printer, plug it in, turn it on and you are all set for fast printing of large or complex documents.

Printer memory arrived promptly and was packaged well. Brand new, factory sealed anti-static bag. Within 5 minutes, my HP Laserjet 1320 was back up and running with 144MB of memory which is the maximum. After upgrade, my printer is notably faster in terms of time to print first page and the interval between printing pages.

I haven't had any problems with the memory card. It came packaged well. I installed it with the printer turned off. I turned the printer on and it found the additional memory with no problem. Unfortunately, I don't know if it sped things up. I don't notice a difference so far. But I'm glad I got the product and now the printer memory is fully populated.

2 sticks 128MB for 2012 HP-4200 (32-bit on 64-bit WIN 7 - generic HP Universal PCL 6 driver). Quickly delivered, easily installed, HP stopped POSTing. A local service shop (Tulsa D-Tech) cleaned the chip slots to make good contact, cleaned the machine, perfect! Don't forget to reset settings mopier, storage auto (w/RAM drive), etc. 100pin 8xSAMSUNG K4S280832I-UC75 SDRAM 5.5ns 133MHz 3.3v. FYI, slot one factory chip is required - it has an 8MB flash firmware chip necessary for HP BIOS - install instructions are in your CD manual.

Works perfectly. Fit right in where it's supposed to go in the printer. When I restarted the printer it recognized that the memory was there, and now it prints faster and doesn't get hung up by a lack of available memory.

I had previously ordered from another seller but it did not fit correctly in the Dimm slot. I am very happy to report that this was shipped very fast and it fits perfectly and works as expected.

The DIMM arrived promptly in a sealed anti-static bag. It was recognized by my LJ 1320 and works great.

Our 13 year old Laserjet 2300 series printer is no longer grasping for “breath” as it tries to print web pages. This simple and easy to install memory boost has given our printer a longer life.

Perfect product. Fits right in. Printer is faster. Should have done it long time ago. Fast delivery.

Good for my 20+ year old laser printer that keeps on chuggin