---
title: "End of Life Notice: STEMlab 125-14 Original-Generation Boards & Gen 2 Migration Guide"
description: Read the EOL notice for Red Pitaya STEMlab 125-14 original boards (sold out). Discover Gen 2 migration steps, SKUs, and Q2 2027 restocks.
image: https://content.redpitaya.com/hubfs/blog%20featured%20image%20-%202026-10-29T142922.065.jpg
---
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# End of Life Notice: STEMlab 125-14 Original-Generation Boards & Gen 2 Migration Guide
- Posted by  [Red Pitaya Technical Editorial Team](https://redpitaya.com/Red-Pitaya-Blog-team/) , October 29, 2026
## Key Takeaways
- **Product Discontinuation:** Original-generation STEMlab 125-14 boards and associated kits are **already completely sold out** and officially discontinued.
- **Immediate Alternatives Available Now:** Our **STEMlab 125-14 PRO Gen 2** and **STEMlab 125-14 PRO Z7020 Gen 2** boards are fully in stock and available for purchase immediately through our webshop and distribution channels.
- **Q2 2027 Catalog Restock:** Unaffected core models (such as 4-input boards, TI variants, SDRlabs, and SIGNALlab) are temporarily out of stock but will return for purchase in **Q2 2027**.
- **Gen 2 Migration Highlights:** Upgrading involves adopting universal USB-C connectivity, utilizing the new ADC CLK SEL pin, accounting for the -5 V negative supply shift, adapting to 2.5 V auxiliary Z7020 GPIO logic, and shifting multi-board sync to the EXT ADC CLK interface.
As part of our continuous commitment to pushing the boundaries of open-source FPGA instrumentation, high-performance data acquisition, and long-term product reliability, Red Pitaya is announcing the official End of Life (EOL) for our original-generation STEMlab 125-14 boards and associated kits.
Following the successful introduction of our Gen 2 platform line—including the STEMlab 125-14 PRO Gen 2 and STEMlab 125-14 PRO Z7020 Gen 2—this transition ensures our community and industrial partners benefit from modern component architectures, enhanced connectivity, and robust multi-channel synchronization.
Below, we break down everything you need to know about affected product part numbers, current hardware availability, status updates for our wider product catalog, and key engineering considerations for migrating to Gen 2.
## Which Products Are Affected? (Discontinued & Fully Sold Out)
This EOL notice applies exclusively to original-generation STEMlab 125-14 hardware and its corresponding bundled kits. All original-generation inventory is now completely sold out.
Affected models and manufacturer part numbers (SKUs) include:
- **STEMlab 125-14 OEM** (Manufacturer PN: MAT0016)
- **STEMlab 125-14 OEM CE3** (Manufacturer PN: MAT0053)
- **STEMlab 125-14 Calibrated kit** (Manufacturer PN: IZD0004)
- **STEMlab 125-14 Diagnostic kit** (Manufacturer PN: IZD0005)
- **STEMlab 125-14 Edu pack** (Manufacturer PN: IZD0042)
- **STEMlab 125-14 Starter kit** (Manufacturer PN: IZD0007)
- **STEMlab 125-14 Low Noise Starter Kit** (Manufacturer PN: IZD0030)
- **STEMlab 125-14 Z7020 Low Noise Starter Kit** (Manufacturer PN: IZD0029)
- **STEMlab 125-14 Ultimate kit** (Manufacturer PN: IZD0008)
## Current Product Availability & Portfolio Roadmap
To provide complete clarity for our customers and distributors, our product lineup is currently organized into three clear categories:
**1. Discontinued (Sold Out)**
- **Original STEMlab 125-14 boards and kits** (listed above): Fully discontinued and sold out.
**2. Available Immediately (In Stock)**
- **STEMlab 125-14 PRO Gen 2** & **STEMlab 125-14 PRO Z7020 Gen 2**: Fully in stock and available for purchase right now through our webshop and distribution channels to support ongoing and future deployments.
- STEMlab 125-14 4-input
- STEMlab 125-14 TI
- STEMlab 65-16 TI
- SDRlab 122-16
- SDRlab 122-16 External Clock
- SIGNALlab 250-12
**3. Supported Core Models (Q2 2027 Restock)**
No other Red Pitaya products are affected by this EOL announcement. However, to help plan upcoming projects, please note that the following specialized core models are currently out of stock in our webshop and scheduled for restock in **Q2 2027**:
We encourage customers and distributors planning projects around these specific models to reach out to our team directly or prepare for the Q2 2027 restock cycle.
## Crucial Hardware Adjustments for Gen 2 Migration
When upgrading an existing setup from an original-generation board to a Gen 2 platform, design and engineering teams must evaluate several key physical and electrical updates detailed in our official migration guidelines:
**1. Universal USB-C Connectivity Upgrade**
All legacy peripheral connectors on the rear of the board have been modernized. The power input, serial console, and USB host connectors have transitioned from micro-USB and USB-A to universal USB-C ports. Furthermore, the S1 and S2 data connectors have been upgraded from SATA to USB-C form factors. Mechanical chassis designs incorporating Red Pitaya boards should review these shifts alongside slight adjustments to the SD card slot location. 
**2. External Clock Selection via ADC CLK SEL**
While the position and voltage range of external clock connections remain consistent, Gen 2 boards incorporate a vital new ADC CLK SEL pin on the E2 extension connector. This pin dictates the active clock source:
- **GND:** Selects the external clock supplied via the EXT ADC CLK pins.
- **3V3 or Floating (NC):** Selects the onboard internal oscillator.
- **Engineering Warning:** Custom extension boards designed for original-generation hardware may automatically pull this pin to GND, inadvertently forcing the Gen 2 board into external-clock mode. Ensure your design holds this pin at 3V3 or leaves it floating if internal clock operation is required.
**3. Negative Supply Voltage Shift (-3.4 V to -5 V)**
The negative supply rail has been upgraded from -3.4 V on original-generation boards to -5 V on Gen 2 models. Engineering teams must review all custom daughterboards, shields, and connected circuitry attached to the negative supply rail to verify they are fully rated for -5 V operation to prevent component stress or failure.
**4. Z7020 Model GPIO Logic Levels & Bank 13 Configuration**
For models utilizing the Zynq-7020 SoC, the auxiliary GPIO pins (DIO8, DIO9, and DIO10 on the E1 connector) operate at 2.5 V logic on Gen 2 boards, compared to 3.3 V on original models. This 2.5 V level optimizes high-speed differential communication lines (DIO11 to DIO18 on E3).
- If your application strictly requires 3.3 V logic levels across Bank 13 (covering DIO8-DIO10 and fast differential pairs), the bank voltage can be modified. However, please note that changing Bank 13 to 3.3 V may reduce high-speed communication performance. Hardware modifications are required; contact support@redpitaya.com for assistance.
**5. Enhanced Multi-Board Synchronization**
For multi-board synchronization, Gen 2 transitions the recommendation away from legacy S1/S2 SATA connections and toward the EXT ADC CLK interface on the E2 connector. Utilizing Red Pitaya Click Shields equipped with onboard clock buffers prevents clock and trigger signal degradation across multiple FPGA passes, delivering vastly superior synchronization stability. Legacy synchronization via S1/S2 remains possible on Gen 2, but requires a physical hardware modification.
For more information about crucial hardware adjustments for Gen 2 Migration read our [Gen 2 Migration Guide (link)](https://content.redpitaya.com/hubfs/Red%20Pitaya%20Gen%202%20Migration%20Guide.pdf).
---
## Frequently Asked Questions: STEMlab 125-14 EOL & Gen 2 Transition
### **1. Will there be an opportunity to order a one-off batch of original STEMlab 125-14 boards?**
No. All original-generation STEMlab 125-14 inventories are completely sold out, and no further production batches will be scheduled.
### **2. How can I ensure my place in line for STEMlab 125-14 Gen 2 shipments?**
Orders for Gen 2 boards are open and fulfilled in the strict sequence they are received. We encourage customers and distributors to place stocking orders early to secure their place in the queue.
### **3. Are the PRO Gen 2 and PRO Z7020 Gen 2 boards affected by price changes?**
PRO Gen 2 and PRO Z7020 Gen 2 models are more powerful, feature-rich instruments produced at different point structures compared to the legacy STEMlab 125-14. Standard pricing applies without legacy discounting.
### **4. Where can I find detailed migration guidance for custom hardware designs?**
We have published a comprehensive [Gen 2 Migration Guide](https://content.redpitaya.com/hubfs/Red%20Pitaya%20Gen%202%20Migration%20Guide.pdf) detailing pinout schematics, mechanical dimensions, and electrical considerations. For personalized engineering support during your transition, contact our team at [support@redpitaya.com](mailto:support@redpitaya.com).
### About the Red Pitaya Team
The Red Pitaya Technical Editorial Team is a cross-functional group of technical communicators and product specialists. By synthesizing insights from our hardware developers and global research partners, we provide verified, high-value content that bridges the gap between open-source innovation and industrial-grade precision.
Our mission is to make advanced instrumentation accessible to engineers, researchers, and educators worldwide.
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