The printer is a HP Photosmart 7520. It can be easily be replaced if that helps. The Dos app reports are all 132-character wide printouts originally designed to print on tractor feed paper.

The app as the ability set print strings including compressed print, portrait or landscape to an laserjet that understands print codes PCL5 or PCL6. I am going to look into DOSPRN. Seems I remember an app called DOS2USB or something like that. Thanks for all the attention.

Jun 30, 2017  COM Port Driver Windows 7 Scroll down to Ports Com; LPT and Double-Click on 'Prolific USB-to-Serial Comm Port COM'. Sep 17, 2014  Parallel port drivers are implemented to enable the functionality of communicating with printers and other devices that are connected to parallel ports. As suggested by Microsoft MVP & Community Moderator Ronnie Vernon Windows 7 does not include 64-bit Parallel port drivers.

Also, there appears to be an issue with running in compatibility mode. My client tells me the window is too small and slow. The ultimate solution may be to purchase a used XP box and laserjet, but really would like to move him to windows 7. For a recommendation I would need more info about your requirements.

Do you need colour? What print speed do you need? How many trays? Would you prefer a networked printer, or do you want to stick with USB (networked usually causes less trouble)? If networked, do you want wired or wireless?

What is your budget? Apart from the price and interface, none of these questions are relevant for DOS. They would only be important if you want to replace the HP. In that case, do you want an all-in-one?

Is photo quality important (lasers are not as good as inkjets for photos)? I'm only interested in getting my DOS program to print to black and white paper.

The original printer was a LJ3 or LJ4. With USB, my client should be able to keep his other printer for use with his windows apps. We have tech over at the clients working with us. We are having to run the program in virtual XP mode.

We can print from there, but fonts are wrong size and no margins. Also, can't size the screen, so it is very small. When clicking on maximize, the window moves to top left corner of screen but doesn't get any bigger.

Which bios depends on which model 530 you have. 'Tried to install printer, but there are no com ports or lpt port appearing in device manager.' Sounds like your printer is not a Dell Printer and therefore not supported here. One reason for not seeing any SERIAL or PARALLEL ports is that the 530 DOES NOT HAVE ANY SUCH PORTS Physically on the system. USB Port Drivers for Printers would require XP Service pack3 since SP1 and SP2 are no longer supported by Microsoft. BIOS - BIOS Description Importance Version Released Supported OS Download Dell Inspiron Desktop 530s System BIOS, Inspiron Desktop 530 System BIOS, 1.0.18 Inspiron 530/530s System BIOS Recommended 1.0.18 3/11/2009 BIOS Dell Inspiron Desktop 530b/530Sb System BIOS, 1.0.2 Inspiron 530b/530sb System BIOS Recommended 1.0.2 2/16/2009 BIOS Dell Inspiron Desktop 530s System BIOS, Inspiron Desktop 530 System BIOS, 1.0.1 Inspiron 530/530s System BIOS Recommended 1.0.1 7/3/2007 BIOS. Flashed bios - no change.

( Nice new dell logo on boot though) I know this machine has no physical ports, I am looking for the ports in device manager as I have to install a usb driver that installs to com3 ( or nearest free com port available).This then drives a vinyl plotter Everything was working fine till the BSOD on Saturday. I wouldn't have thought that reinstalling windows could remove these from the system, but that seems to be the case. This really is driving me nuts, even thought of reinstalling windows again, but what would be the point if I still have no ports in device manager. I have reinstalled my printer (not plotter) a dell AIO 810 and that works fine.

The USB ports REQUIRE the Service Packs. Then the Driver for Serial to USB. Windows XP Service Pack 3 Network Installation Package - Microsoft PL-2303H / 2303HX / 2303HXD Drivers are not native to XP. There are however also NOT A Dell Product. There are ZERO Drivers for a USB to Serial to Plotter from Dell.

No 'Ports' would EVER show up since they are not physically there. Once the USB fixes and USB to SERIAL drivers are installed the 'Com' PORT will show up. If you do not use a USB to Serial Adapter then the Driver for the Plotter needs to be installed. I would recommend using a Keyspan brand USB adapter for this type of connection. SignWarehouse stocks and sell the Keyspan Adapters. There is an article on the support website () below that has instructions on how to set the Keyspan up once you have it: You can contact sales or order the Keyspan from support at (800) 966 - 1783.

You can also email support directly at if you have any other questions.