Works well, great value
“I ran this thing at 300 baud, and 1M baud and it worked great…”
9 signal LEDs · FT232RL
dynattenik DeStatiX-A9 See every RS232 signal — not just TX and RX
An ordinary USB-to-serial adapter lights up when data moves, and that is all it tells you. When the link fails, the cause is usually a handshake line — CTS, RTS, DTR, DSR, DCD or RI — and a two-LED adapter shows you none of them. DeStatiX-A9 puts an LED on all nine DB9 signals, so you can see which line is wrong at a glance instead of measuring pins one at a time with a multimeter.
- All 9 lines visible, not just 2
- No multimeter or scope needed
- Up to 921.6 Kbps, RTS/CTS flow control
- FTDI drivers: Windows, macOS, Linux
Windows · macOS · Linux
Setup assistance included
USB bus-powered
921.6KMax baud rate
9×Status LEDs
15kVESD protection
Real-time diagnostics
Every other adapter gives you two LEDs
One lights when data goes out, one when it comes in. That is the whole story a standard USB-to-serial adapter can tell you — and it is not the part that usually breaks.
What two LEDs cannot tell you
- Whether CTS, RTS, DTR, DSR, DCD or RI is being driven high or low right now
- Whether the target board is driving its handshake signals at all
- Whether the handshake timing is correct once the target powers up
What nine LEDs let you check, in order
- Power: the adapter is bus-powered — DTR and RTS flash once as it enumerates on USB.
- Data: TXD and RXD blinking means bytes are moving.
- Handshake: RTS, CTS, DTR, DSR, DCD and RI show the level on every line — the most common cause of a dead serial link, and the one a two-LED adapter hides completely.
TXD
RXD
RTS
CTS
DSR
DTR
RI
CD
GND
Design tradeoff: GND is the reference ground, so it sits at 0 V and its LED never lights. That is a pin-out reference, not a fault — and it gives you an unlit baseline, so every other LED reads as high when lit and low when dark.
Buyer feedback
What buyers say
Excerpts from reviews on our Amazon listing, quoted as written. The customer reviews page carries them in full.
Solid adapter, with a rarely-seen bonus
“…this model has a seldom-seen feature that is a great aid, namely, the LED indicators built-in to the cable that give a comprehensive view of the status of all 9 data lines.”
Great product
“Works flawlessly on Fedora Linux to connect a serial Insteon PLM to usb port. The LEDs came in handy to troubleshoot a non responsive controller…”
Links to Amazon may be affiliate links — as an Amazon Associate, dynattenik may earn from qualifying purchases, at no additional cost to you.
Choose your pack
Four pack sizes, one dependable adapter
Every pack contains the same DeStatiX-A9 adapter — pick the quantity that fits your bench, lab, team or production line.
1×
1-Pack
Includes 1 × DeStatiX-A9 USB to RS-232 adapter.
- Ideal for a single workstation
- Field service & on-site commissioning
- USB bus-powered, no PSU needed
2×
2-Pack
Includes 2 × DeStatiX-A9 USB to RS-232 adapters.
- Bench + laptop configuration
- Keep one unit as a spare
- Reduced cost per adapter
4×
4-Pack
Includes 4 × DeStatiX-A9 USB to RS-232 adapters.
- Suited to small labs & teams
- Multi-device test carts
- Best balance of value & coverage
6×
6-Pack
Includes 6 × DeStatiX-A9 USB to RS-232 adapters.
- Production lines & workshops
- Standardise your whole team
- Lowest cost per adapter
Links to Amazon may be affiliate links — as an Amazon Associate, dynattenik may earn from qualifying purchases. This never changes the price you pay. See the full disclosure.
| Feature | 1-Pack | 2-Pack | 4-Pack | 6-Pack |
|---|---|---|---|---|
| Adapters included | 1 | 2 | 4 | 6 |
| Typical deployment | Single workstation | Bench + laptop | Lab team | Production line |
| Spare units available | — | 1 | 3 | 5 |
| Cost per adapter | Standard | Lower | Lower still | Lowest |
| Model | DeStatiX-A9 | DeStatiX-A9 | DeStatiX-A9 | DeStatiX-A9 |
Where to buy
Finding DeStatiX-A9 on Amazon
Every pack button on this page opens Amazon search results for the exact phrase below. If you are already on Amazon, type that phrase into the search bar instead.
dynattenik ftdi usb rs232 adapter
Then check that the brand reads dynattenik on the product page before you order.
Links to Amazon may be affiliate links — as an Amazon Associate, dynattenik may earn from qualifying purchases, at no additional cost to you.
Why the DeStatiX-A9
Engineered for stable, diagnosable serial links
Every design choice targets the realities of legacy RS232 work: unknown wiring, flaky handshakes, static discharge and drivers that must simply work.
FTDI FT232RL chipset
Industry-standard USB-to-serial conversion for industrial automation, manufacturing equipment, testing systems and data acquisition.
9 LED signal monitoring
Track TXD, RXD, RTS, CTS, DSR, DTR, RI, CD and power at a glance. Verify wiring and confirm transmission without extra software.
ESD & surge resilience
Integrated protection to 8kV–15kV per IEC 61000-4-2 helps guard connected equipment against electrostatic discharge and voltage spikes.
Full serial parameters
300–921.6 Kbps baud rates, selectable parity (None/Odd/Even/Mark/Space), 7 or 8 data bits and 1 or 2 stop bits.
Hardware flow control
RTS/CTS handshake signalling for equipment that requires it, backed by 256-byte receive and 128-byte transmit buffers.
Integration support
dynattenik assists with driver installation, setup and troubleshooting across integration projects and legacy RS232 rollouts.
Where it fits
Where seeing the handshake saves the most time
Production fixtures, bench debugging and the classroom — anywhere a serial port has to be proven working rather than assumed working.
Industrial automation
PLC programming, HMI configuration and controller commissioning.
Data acquisition
Logging from instruments, meters and sensors that speak RS-232.
Legacy equipment
Keep CNC machines, POS terminals and lab analysers in service.
Test & measurement
Bench setups and production test rigs needing repeatable serial links.
Production line fixtures
Checking a freshly soldered serial port needs no scope or meter: an operator reads the LEDs and sees whether the interface is alive. FTDI's VCP drivers ship with Windows, macOS and Linux, so the same rig works at any site.
Teaching and labs
All nine signals in front of the class, so DTR/DSR and RTS/CTS stop being abstract and become something a student can watch happen. The unlit GND is the reference for what a low level looks like.
Product gallery
A closer look
Click any image to open it full size.
Technical data
Technical specifications
Model DeStatiX-A9 — 1-port DB9 serial adapter.
| Brand | dynattenik |
|---|---|
| Model No. | DeStatiX-A9 |
| Chipset | FTDI FT232RL |
| LEDs | 9 × LEDs (TXD, RXD, RTS, CTS, DSR, DTR, RI, CD, GND) |
| Bus type | USB 2.0 |
| Connector type(s) | USB 2.0 Type-A (upstream) · DB-9 9-pin D-Sub, male (downstream) |
| Ports | 1 |
| Port style | Cable adapter |
| Serial protocol | RS-232 |
| Max baud rate | Up to 921.6 Kbps (300 bps – 921.6 Kbps) |
| Data bits | 7, 8 |
| Parity | None, Odd, Even, Mark, Space |
| Stop bits | 1, 2 |
| Flow control | RTS/CTS hardware handshake |
| Buffer | 256-byte receive · 128-byte transmit |
| ESD protection | 8kV–15kV per IEC 61000-4-2 |
| Power | USB bus-powered — no external supply required |
| OS compatibility | Windows 11, macOS 15, Linux |
Windows 11
VCP driver support, typically recognised automatically.
macOS 15
Compatible with FTDI virtual COM port drivers.
Linux
In-tree FTDI serial support on mainstream distributions.
What it is
What you are buying
The short answers, in the terms the part is usually searched for.
What is a dynattenik FTDI USB RS232 adapter?
A single-port converter that bridges a modern USB port to legacy RS232 serial equipment. The DeStatiX-A9 is built on the FTDI FT232RL chipset, ends in a DB9 male connector, and adds nine status LEDs so you can watch TXD, RXD and the handshake lines without a breakout box or a scope.
Which systems work with the dynattenik FTDI adapter?
Windows 11, macOS 15 and Linux. Windows and macOS use the FTDI virtual COM port driver; mainstream Linux distributions carry FTDI support in-tree, so the port appears on plug-in with no driver to install.
What can I connect to the dynattenik FTDI USB adapter?
Anything that speaks RS232: PLCs and industrial controllers, CNC machines, point-of-sale terminals and receipt printers, laboratory and medical instruments, switch and router console ports, GPS receivers and older diagnostic kit.
Does the dynattenik FTDI RS232 adapter need a power supply?
No. It is USB bus-powered and takes what it needs from the host port, so there is no brick and no extra cable — which is the point when you are commissioning on site.
Is the dynattenik USB RS232 adapter tough enough for industrial use?
It carries ESD protection rated 8kV–15kV per IEC 61000-4-2, uses a DB9 connector that screws down so vibration cannot work it loose, and drives true RS232 signal levels rather than TTL. The nine LEDs exist because a link that has failed silently is the hardest kind to diagnose.
Documentation
Downloads & documentation
Product manual and specification sheets for integration planning and procurement.
FCC
ISED
CE
UKCA
VCCI
RoHS
REACH
J-Moss
Authorised, marked and documented for the United States, Canada, the European Union, the United Kingdom and Japan. Every statement behind these marks, each in the language its market requires, is on the certifications page.
Need the right pack for your project?
Choose the quantity that matches your deployment — or contact dynattenik for help selecting a configuration.