I need a serial connection cable for a Seiko SLP 220.

I'm making the assumption that your SmartLabel printer was installed on your desktop computer and now you want to use the SmartLabel printer on your laptop. I'm also assuming your what the addresses from your desktop computer. That said...

Seiko has eliminated the software and driver support for all older models but you can download the needed software from a third party site. Here's a link to the very stable version 4.61
Seiko SLP 100 Free Driver Download

Make SURE your SmartLabel Printer is NOT Connected!

Set Up Steps
A. Install SmartLAbel Printer on your laptop
1) Copy the Seiko software onto your laptop and begin the installation program.
2) At the point were the installation program asks, connect your SmartLabel printer
3) If the SmartLabel program is open, close it
B. Retrieve your SmartLabel addresses from your desktop
1) Look for the SmartLabel directory under Program Files on your desktop computer
2) in this directory find a file named label.sll This file holds your SmartLabel 100 addresses.
3) Copy the file to a USB Stick
C. Transfer your labels to your new installation on your laptop
1) After installing your new SmartLabel printer on your laptop. Insert the USB Stick in your laptop
2) Copy the label.sll file into the new SmartLabel directory under Program Files.
3) Start the SmartLabel software and open a new label, you should see the addresses from your desktop computer
4) If you don't see your addresses, you may have to use the Import command on the label.sll file to bring your addresses into your new SmartLabel Application

Hope this helps

Seiko has really downgraded its legacy product support and it has minimized its application and driver software available for download. To find software for your SLP 200 you'll have to good to a third party site like Drivers Guide. The link below is for version 7.0.3
Seiko SLP 420 Free Driver Download

Important tips when finding and downloading application/ driver software from non-OEM sites

1. Never install any application from a non-OEM site that says it will scan your computer to determine what files you need. - search using the manufacturer name, model number, and current operating system on the computer you want to install the device on.

2. Only install the files you found. Never download any software suggested.

3. When installing the downloaded files, always select Custom Installation to make sure you only install the software you need. In this case only the application and driver files, nothing else ( no driver updating, security scanning, toolbar, etc. programs).

In the specific case of the Seiko Smart Label printer make sure your printer is not hooked up until the Seiko software tells you to.

It would help if you had mentioned the Operating system and model number

The official Seiko site is:
Software Driver Downloads

However, Seiko has deleted its legacy printer support so you may have to find your drivers on a third party site
SLP Related Drivers
SII Printers Drivers Download for Windows 7 8 XP Vista

Note: With Seiko Smart Label printers make sure your printer is not connected to your computer until the Seiko software tells you to.

Important tips when finding and downloading application/ driver software from non-OEM sites

1. Never install any application from a non-OEM site that says it will scan your computer to determine what files you need. - search using the manufacturer name, model number, and current operating system on the computer you want to install the device on.

2. Only install the files you found. Never download any software suggested.

3. When installing the downloaded files, always select Custom Installation to make sure you only install the software you need. In this case only the application and driver files, nothing else ( no driver updating, security scanning, toolbar, etc. programs).

I think you're out of luck. Seiko has really downgraded its legacy product support and it has minimized its application and driver software available for download. You can try using a Windows 7 package. To find software for your SLP 100 you'll have to go to a third party site like Drivers Guide. The link below is for version 7.0.3 while it says its for the SLP 420 it's actually compatible with several models
Seiko SLP 420 Free Driver Download

Important tips when finding and downloading application/ driver software from non-OEM sites

1. Never install any application from a non-OEM site that says it will scan your computer to determine what files you need. - search using the manufacturer name, model number, and current operating system on the computer you want to install the device on.

2. Only install the files you found. Never download any software suggested.

3. When installing the downloaded files, always select Custom Installation to make sure you only install the software you need. In this case only the application and driver files, nothing else ( no driver updating, security scanning, toolbar, etc. programs).

In the specific case of the Seiko Smart Label printer make sure your printer is not hooked up until the Seiko software tells you to.

The official Seiko site is:
Software Driver Downloads
However, Seiko has deleted its legacy printer support so you will have to find your 220 drivers from a third party site. The 220 is pretty old so you need to use an older driver and it may not support newer operating systems
Seiko SLP 200 USB Driver Free Driver Download

Note: With Seiko Smart Label printers make sure your printer is not connected to your computer until the Seiko software tells you to.

Important tips when finding and downloading application/ driver software from non-OEM sites

1. Never install any application from a non-OEM site that says it will scan your computer to determine what files you need. - search using the manufacturer name, model number, and current operating system on the computer you want to install the device on.

2. Only install the files you found. Never download any software suggested.

3. When installing the downloaded files, always select Custom Installation to make sure you only install the software you need. In this case only the application and driver files, nothing else ( no driver updating, security scanning, toolbar, etc. programs).

The official Seiko site is:
Software Driver Downloads

However, Seiko has deleted its legacy printer support so you will have to find your drivers on a third party site. The EZ30 is really old, I think it will only use a serial cable, and it will probably not work with a newer operating system. Here's the only link I could find for a SmartLabel EZ30 label printer.

Seiko SLP EZ30 Free Driver Download

Note: With Seiko Smart Label printers make sure your printer is not connected to your computer until the Seiko software tells you to.

Important tips when finding and downloading application/ driver software from non-OEM sites

1. Never install any application from a non-OEM site that says it will scan your computer to determine what files you need. - search using the manufacturer name, model number, and current operating system on the computer you want to install the device on.

2. Only install the files you found. Never download any software suggested.

3. When installing the downloaded files, always select Custom Installation to make sure you only install the software you need. In this case only the application and driver files, nothing else ( no driver updating, security scanning, toolbar, etc. programs).

The official Seiko site is:
Software Driver Downloads
However, Seiko has deleted its legacy printer support so you will have to find your drivers on a third party site. I've included links to your drivers below:
Seiko SLP 420 Free Driver Download

SIISLP200 Drivers Download for Windows 7 8 XP Vista

Note: With Seiko Smart Label printers make sure your printer is not connected to your computer until the Seiko software tells you to.

Important tips when finding and downloading application/ driver software from non-OEM sites

1. Never install any application from a non-OEM site that says it will scan your computer to determine what files you need. - search using the manufacturer name, model number, and current operating system on the computer you want to install the device on.

2. Only install the files you found. Never download any software suggested.

3. When installing the downloaded files, always select Custom Installation to make sure you only install the software you need. In this case only the application and driver files, nothing else ( no driver updating, security scanning, toolbar, etc. programs).

The official Seiko site is:
Software Driver Downloads
However, Seiko has deleted its legacy printer support so you will have to find your drivers on a third party site. I've included links to your drivers below:

Seiko SLP 420 Free Driver Download
SIISLP200 Drivers Download for Windows 7 8 XP Vista

Note: With Seiko Smart Label printers make sure your printer is not connected to your computer until the Seiko software tells you to.

Important tips when finding and downloading application/ driver software from non-OEM sites

1. Never install any application from a non-OEM site that says it will scan your computer to determine what files you need. - search using the manufacturer name, model number, and current operating system on the computer you want to install the device on.

2. Only install the files you found. Never download any software suggested.

3. When installing the downloaded files, always select Custom Installation to make sure you only install the software you need. In this case only the application and driver files, nothing else ( no driver updating, security scanning, toolbar, etc. programs).

Please get the driver here for your printer : www.lexmark.com/lexmark/.../0,6959,204812589_652569478_0_en,00.html
www.nodevice.com/free_downloads.html
Best regards, Jay__ngb

http://www.usbgear.com/computer_cable_details.cfm?sku=CHEAP-SERIAL&cats=199&catid=482%2C1303%2C199%2C461%2C106%2C1009%2C601