Design
Country of origin	China
Internal
Other features
Compatibility	HP EliteDesk 8 Tower G1i Desktop AI PC; HP EliteDesk 8 SFF G1i Desktop AI PC; HP EliteDesk 8 Mini G1i Desktop AI PC; HP EliteDesk 8 Mini G1a Desktop PC; HP ProDesk 4 Tower G1i Desktop AI PC; HP ProDesk 4 SFF G1i Desktop AI PC; HP ProDesk 4 Mini G1i Desktop AI PC
UNSPSC-code	39121408
Ports & interfaces
Host interface	Serial
Technical details
Total carbon footprint (kg of CO2e)	10
General Product Safety Regulation (GPSR) URL	https://support.hp.com/us-en/document/ish_6126692-6126777-16?openCLC=true
Weight & dimensions
Width	41.8 mm
Depth	39 mm
Height	16.5 mm
Weight	12.4 g

The HP Serial Port v3 Flex IO (manufacturer part number 5B895AA) is a modular slot expander module designed specifically for expanding HP desktop systems with a serial interface. It serves as a replacement or additional module for devices featuring a FLEX IO slot, extending connection options for existing workstations or desktop PCs. The module is compatible with a range of HP desktop models, including the HP EliteDesk 8 Tower G1i, HP EliteDesk 8 SFF G1i, HP EliteDesk 8 Mini G1i, HP EliteDesk 8 Mini G1a, HP ProDesk 4 Tower G1i, HP ProDesk 4 SFF G1i, and HP ProDesk 4 Mini G1i, all featuring integrated AI technology. It is used within the FLEX IO system, which enables flexible, modular expansion of I/O functions.

Applications
This module is designed for users requiring a serial interface in existing work environments, for example, to connect industrial devices, measuring instruments, cash register systems, or other legacy peripherals communicating via RS-232. Integration is direct into the FLEX IO slot of the host system, eliminating the need for additional external adapters or cables.

Functions and Features in Detail
The HP Serial Port v3 Flex IO provides a serial host interface connected via the FLEX IO slot of the host computer. The interface enables communication with serial devices according to the RS-232 standard. The module is designed as a compact, insertable unit that fits into the designated slot of the host system. It does not feature additional connectors, cables, or external power supplies, instead relying on power and data transmission through the FLEX IO slot of the host system.

Technology Explained Simply
The module functions as an internal expansion adapter, directly inserted into the FLEX IO slot of the host computer. Communication occurs via the serial interface, designed for connecting devices using the RS-232 protocol. Data transmission is handled by the integrated module, without requiring additional external adapters or drivers. Power is supplied by the host computer, eliminating the need for an external power source. The module dimensions are 41.8 mm (width), 39 mm (depth), and 16.5 mm (height), with a weight of 12.4 g. Its compact design allows for easy integration into designated host systems without additional space requirements.

Compatibility and Accessories
The module is exclusively intended for the specified HP desktop models featuring a FLEX IO slot. It is not compatible with other systems that do not support the FLEX IO module system. Compatibility includes the HP EliteDesk 8 Tower G1i, HP EliteDesk 8 SFF G1i, HP EliteDesk 8 Mini G1i, HP EliteDesk 8 Mini G1a, HP ProDesk 4 Tower G1i, HP ProDesk 4 SFF G1i, and HP ProDesk 4 Mini G1i, all with integrated AI technology. It is not compatible with other FLEX IO modules such as DisplayPort, HDMI, or USB, as only one module per slot can be used. Simultaneous use of multiple modules is not intended.

Installation and Mounting
Installation is performed by inserting the module into the FLEX IO slot of the host computer. Mounting requires no additional tools or screws, as the module is directly plugged into the slot. Connection is secured by mechanical fit and electrical contact. After installation, the module is immediately operational once the host computer is restarted. Installation requires no additional software or drivers, as the serial interface is automatically recognized by supported operating systems.

Operational Advantages
The module provides a reliable and compact solution for expanding I/O functions of HP desktop systems. Direct integration into the FLEX IO slot reduces the number of external cables and adapters, resulting in a tidier and safer work environment. The use of a serial interface enables connection to legacy devices lacking USB or Ethernet interfaces. The low profile and lightweight design ensure easy handling and integration into existing systems. Compatibility with a range of HP desktop models increases flexibility when selecting a host system.