eXP-9435 Communication Port Expander

Expand Your Substation Data Concentrator and Provide Secure Access for Your Entire Enterprise

The eXP-9435 is a compact addition to your ePAQ-9410/9420/9425 Multifunction Gateway, which expands the number of serial or IP ports for access to additional devices or IEDs.

Housed in a 19” width enclosure with a 1U footprint, the eXP-9435 has rear access connections for convenient rack mounting. Serial communication ports may be accessed through rear panel fiber ST connectors or DB-9 connectors.

Convertible Communication Ports for Flexible Installations

The eXP-9435 provides 16 additional ports which are convertible RS-232 or RS-485 and may be allocated on a per port basis. Optionally, these may be provided as eight serial fiber ports with eight ST (multimode) connectors, or as a mix of eight RS-232/485 ports and four fiber ports.

The 10/100 BaseTX connection is through a standard RJ-45 connection, with the 100 BaseFXinterface using standard ST fiber connectors.

What Our Customers Have to Say

“QEl did a fabulous job installing and configuring four SCADA servers for our Quad-Redundant QEI SCADA system.”

Florida Water Utility

“For the last 11 years, we have had a QEI SCADA system that monitors our two substations and line reclosers. We have been very happy with the quality of their product and more importantly, the service that they provide to maintain the system. Everyone at QEl really seems to know their product inside and out.”

Village of Lake Placid

“We have utilized QEl for our SCADA needs for over 20 years. They provide an excellent system, both software and hardware. QEl’s staff has alwavs been there for our needs and is always helpful and friendly We highly recommend QEl’s system and their maintenance contracts to keep your system current.”

Emerald Coast Utilities Authority (ECUA)

“The new website is very user-friendly. I really like the Customer Portal, which provides quick access to manuals, presentations, and software updates. Q Tips and more.”

City of Wilson, NC

“We have always been able to rely on QEl for their technical knowledge and support. Thank you QEI.”

Mid-Atlantic Municipal Utility

“QEl is a company that not only makes a great product but backs it up with outstanding service.”

Village of Lake Placid

It’s Easy to Get Started


Schedule a Consultation Call

Let’s talk through your goals and what your current infrastructure looks like.


We’ll Collaborate to Develop a Solution

We’ll develop a plan to modernize your infrastructure to meet your goals.


Experience the Advantages of QEI

We’ll coordinate and execute the plans for your upgraded system.