Keyspan USB Twin Serial Adapter (USA28)

Author:

Keyspan, InnoSys

Publisher:

Keyspan, InnoSys

Type:

System

Category: Drivers & Hardware Support

Language:

Shared by: MR

On: 2015-01-07 06:26:40

Updated by: Equveni

On: 2025-01-11 13:06:04

Other contributors: InkBlot

, Sisko214

, that-ben

, SteveS

, kalleboo

Rating: 0.00 Clarus

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Year: 1999

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What is Keyspan USB Twin Serial Adapter (USA28)?

NOTE: The .toast image I included is a full image of the CD-ROM for v.1.5.1. It includes documentation. You can download the later versions and this for completion. IT IS NOT A SERIAL NUMBER!!

Looking for a way to hook a serial printer, graphics tablet, camera or PDA to the USB ports on your new iMac, 'blue and white' G3 or USB equipped Macintosh computer? The Keyspan USB Serial Adapter is a simple and reliable way to make the connection.

The Adapter plugs into any built-in USB port on your Mac or USB Hub. It provides two serial ports which can be used to connect to Macintosh serial devices.

The Adapter requires Mac OS version 8.1 (or later) and Mac OS USB drivers version 1.0.1 (or later).

Note: The installer will not run unless you have the Mac OS USB drivers version 1.0.1 (or later).

If you have an iMac or 'blue and white' G3 running Mac OS 8.5 or greater, these drivers are already installed.

If you have an iMac running Mac OS 8.1, the Mac OS USB drivers version 1.0.1 can be obtained from the iMac Update 1.0. This update is included on the CD-ROM that came with your Keyspan USB Serial Adapter and can also be downloaded from Apple's web site.

Download Keyspan USB Twin Serial Adapter (USA28) for Mac

USB_Twin_Serial_Adapter_CD.toast_.zip

(1.43 MiB / 1.5 MB)
Version 1.1.1 (Mac OS 8 - 8.1 - Mac OS 9) / Toast image, zipped

131 /

2015-01-07 /

2019-04-13 /

7175759e8273b67c6838076b49537e57b4838977 /

KeyspanUSa28Xv19.sit.bin

(552.5 KiB / 565.76 KB)
Version 1.9 (Mac OS 8.6 - 9.x) / Binary encoded, use Stuffit Expander

82 /

2019-04-13 /

7ee028752e530cfd47fd629e303621aa1eaa925d /

Keyspan-USB-Serial.toast

(8.81 MiB / 9.23 MB)
Version 1.5.1 (Mac OS 8.1 - Mac OS 9) / Toast image

53 /

2019-10-14 /

44458d2e67cb9540518f5cf6874e6f9c425a9f13 /

KeyspanUSA28v21.sit

(559.66 KiB / 573.09 KB)
/ compressed w/ Stuffit

48 /

2017-11-26 /

2a65e955fc8e89512d0996a9b980336decb8dede /

Keyspan_USA28_2.1.sit_.hqx

(621.62 KiB / 636.54 KB)
/ BinHex'd, use Stuffit Expander

14 /

2023-01-07 /

0b15deb030e23e7e8851a50268d3214a88755cfd /

KeyspanUSA28v21.mac

(468.75 KiB / 480 KB)
/ MAR/MAC archive

12 /

2023-01-07 /

51ca569370a8cb14939c6dc24c319c3ec78aac4d /

USB_Serial_Adapter_1.5.sit_.hqx

(4.7 MiB / 4.93 MB)
/ BinHex'd, use Stuffit Expander

14 /

2023-01-07 /

e7fa31319070532f74745d2bdf706dcdb102dbe5 /

Install-Keyspan-USa28--2.1-.sit

(461.75 KiB / 472.84 KB)
/ compressed w/ Stuffit

40 /

2020-07-21 /

9618024ea8ffb54ec96241abd0ca6a85527cbae5 /

keyspan_driver_for_usa-28xg_v2.5_mac_os_x_10.2.8_to_10.5.x.zip

(1.58 MiB / 1.66 MB)
/ Zipped

12 /

2023-12-24 /

144b53af98a0622adc1fbe3535499af1a539dd5b /

keyspan-driver-for-usa-28xg-v2.1b4-mac-os-9.2-and-later.zip

(556.04 KiB / 569.39 KB)
/ Zipped

17 /

2023-12-24 /

075049ebd4125fe4e5749592eecafc7cfa13148c /

driver_for_usa-28xg_v2.6.4_mac_os_x_10.6.x_to_10.8.x.zip

(386.58 KiB / 395.85 KB)
/ Zipped

10 /

2023-12-24 /

6e20728aa315ba204b88495e9779681d9c2fa890 /

Architecture

IBM PowerPC

System Requirements

From Mac OS 8.1 up to Mac OS 9.2

Compatibility notes

This adapter is not compatible with devices that require LocalTalk/AppleTalk or Geoport.

To check which model you have, open Apple System Profiler, go to the Devices and Volumes tab, and it should show up connected to the USB bus even if there's no driver installed.

Device ID	Model	Working Drivers	Notes
$101	USA-28
$102	USA-28X
$114	USA-28Xa
$113	USA-28Xb	v1.9 (for Mac OS 9)	Top of the logo towards the mini DIN ports

(Device ID source, Model descriptions)

Emulating this? It could probably run under: SheepShaver