Compare feeder size, wired-network access and software-dependent destinations without manufacturing a speed winner.
The decision in brief
How the options differ
Both offer touchscreens, wireless scanning and TWAIN support. The clearer starting differences are nominal batch capacity and the Brother model's documented Ethernet option, not a universal promise that every destination works without software.
By CompareFoundry · Published · Editorial review · Manufacturer documentation, not hands-on testing.
The buying guide
Package and specification details
Compare the batch you actually load
Epson lists a 100-sheet feeder; ADS-3350W lists 60 sheets using 20 lb paper. That suggests a different reload pattern for ordinary stacks, but mixed receipts or damaged pages can require smaller batches on either. A maximum ADF number is not a measurement of unattended reliability.
Brother documents Ethernet alongside Wi-Fi and USB. The reviewed Epson source establishes Wi-Fi and USB paths but does not settle an Ethernet port. A wired office requirement is therefore supported by the Brother evidence, while the Epson gap should remain explicit rather than silently becoming a negative fact.
Both document USB-memory destinations and TWAIN-based software paths. Cloud services, OCR and network/server destinations have separate host, setup and account requirements. Identify where the image becomes a named, searchable file; a touchscreen or cloud icon does not establish that the whole process is independent of a computer.
Epson states 35 ppm / 70 ipm at Letter 300 dpi. Brother's general wording states 40 ppm while its duplex table lists 40 ipm. This review does not invent an 80 ipm figure for ADS-3350W. Verify the exact mode when speed is decisive, and keep source ratings separate from measured OCR or network performance.
Does this comparison use the discontinued ADS-3300W?
No. It uses the exact ADS-3350W US product and retains its source qualifications.
Source · 2026-10-10Brother: ADS-3350W US scanner, interfaces and specificationsChecked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.Does TWAIN support guarantee my application will work?
No. The exact driver, operating system and application still need verification.
These manufacturer specifications do not establish measured performance, noise, long-term reliability or running cost. We have not independently tested these products. Check current prices, stock and operating-space instructions with the seller and manufacturer.
The link may open several packages. Check current price and availability with the seller. Opens in a new tab.
External rating
WorkForce ES-580W (US standard package)
4.5 out of 5from 93 ratings · Epson US store ↗ · Checked October 23, 2026.
ADS-3350W (US standard package)Not checked yet
Duplex scanning
Whether two-sided document scanning is documented.
Images per minute count sides; sheets per minute count physical sheets. These must not be mixed.
WorkForce ES-580W (US standard package)YesSource · 2026-10-10Epson America: WorkForce ES-580W US B11B258201Checked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.
The documented automatic feeder capacity, qualified by the source.
Maximum capacity depends on paper weight. Mixed or fragile originals can require smaller batches.
WorkForce ES-580W (US standard package)100 sheetsNominal automatic-feeder claim; actual mixed-paper capacity is not tested.Source · 2026-10-10Epson America: WorkForce ES-580W US B11B258201Checked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.
ADS-3350W (US standard package)60 sheetsMaximum based on 20 lb paper; not a guarantee for mixed originals.Source · 2026-10-10Brother: ADS-3350W US scanner, interfaces and specificationsChecked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.
Advertised speed and basis
Manufacturer throughput with mode and document conditions.
Resolution, colour mode, host and enabled processing affect throughput. A brochure figure is not our benchmark.
WorkForce ES-580W (US standard package)Up to 35 ppm / 70 ipm for Letter at 300 dpi, black, grey or colour.Source · 2026-10-10Epson America: WorkForce ES-580W US B11B258201Checked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.
ADS-3350W (US standard package)Up to 40 ppm, Letter at 300 dpi with advanced features off.The ADS-3350W duplex table says 40 ipm; its general ppm wording does not justify publishing an inferred 80 ipm.Source · 2026-10-10Brother: ADS-3350W US scanner, interfaces and specificationsChecked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.
Optical resolution
The hardware optical resolution rather than interpolated output.
A larger output setting does not create additional optical detail or guarantee better OCR.
WorkForce ES-580W (US standard package)Not verified
We have not verified this value. It is not a confirmed no or zero. Check the original source or ask the manufacturer if it affects your choice.
The reviewed US product text did not expose a complete optical-resolution specification; regional retailer values were not substituted.Source · 2026-10-10Epson America: WorkForce ES-580W US B11B258201Checked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.
The documented scanner-to-computer and network interfaces.
A USB host port for a memory stick is not the same as the connector used by a computer.
WorkForce ES-580W (US standard package)USB computer connection and Wi-Fi; a separate USB-memory destination is documented.Source · 2026-10-10Epson America: WorkForce ES-580W US B11B258201Checked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.
ADS-3350W (US standard package)USB 3.0, Wi-Fi and wired Ethernet; USB-memory destination also documented.Source · 2026-10-10Brother: ADS-3350W US scanner, interfaces and specificationsChecked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.
Wi-Fi documented
Whether built-in Wi-Fi is documented.
Wireless scanning still requires the supported setup, software and destination.
WorkForce ES-580W (US standard package)YesSource · 2026-10-10Epson America: WorkForce ES-580W US B11B258201Checked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.
Do not infer Ethernet from a cloud destination or support for a network folder.
WorkForce ES-580W (US standard package)Not verified
We have not verified this value. It is not a confirmed no or zero. Check the original source or ask the manufacturer if it affects your choice.
Ethernet was not established by the reviewed US source.Source · 2026-10-10Epson America: WorkForce ES-580W US B11B258201Checked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.
A touchscreen does not make every destination computer-free.
WorkForce ES-580W (US standard package)YesSource · 2026-10-10Epson America: WorkForce ES-580W US B11B258201Checked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.
Whether the manufacturer documents a TWAIN driver for this model.
Check the specific host and application. TWAIN availability is not a promise that every document-management package is compatible.
WorkForce ES-580W (US standard package)YesSource · 2026-10-10Epson America: WorkForce ES-580W US B11B258201Checked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.
Documented standalone destinations and their setup requirements.
Separate capture without a PC from initial configuration, software-dependent OCR and third-party cloud accounts.
WorkForce ES-580W (US standard package)Scan to a compatible USB memory drive without a computer.Other destinations and cloud sharing have their own setup/account/software conditions; no blanket computer-free claim.Source · 2026-10-10Epson America: WorkForce ES-580W US B11B258201Checked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.
ADS-3350W (US standard package)USB-memory and selected network/server destinations are documented.Cloud services need internet and the relevant account; software/setup conditions vary by destination.Source · 2026-10-10Brother: ADS-3350W US scanner, interfaces and specificationsChecked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.
Software and host requirements
The documented application route and licensing or host qualifications.
Regional bundles and supported OS releases change. Optional paid applications and accounts are not automatically included.
WorkForce ES-580W (US standard package)Epson ScanSmart, searchable-document workflow and a TWAIN driver are documented.Check current host support; no universal licence or third-party application compatibility is implied.Source · 2026-10-10Epson America: WorkForce ES-580W US B11B258201Checked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.
ADS-3350W (US standard package)TWAIN, WIA and SANE documented. Downloads and applications depend on OS and region.Source · 2026-10-10Brother: ADS-3350W US scanner, interfaces and specificationsChecked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.
Document handling scope
The reviewed paper and special-media limits.
A long-paper setting, carrier sheet and manual feeding are separate capabilities; do not generalise an ADF capacity to every original.
WorkForce ES-580W (US standard package)ADF documents, receipts and cards within the model-specific loading limits.Detailed special-media size/weight conditions require the current US manual.Source · 2026-10-10Epson America: WorkForce ES-580W US B11B258201Checked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.
ADS-3350W (US standard package)Sheet-fed documents with continuous scanning; use model-specific size/weight limits.Source · 2026-10-10Brother: ADS-3350W US scanner, interfaces and specificationsChecked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.
Included equipment
The reviewed standard US hardware package.
The presence of a USB-C port does not establish an included USB-C-to-C cable. Memory sticks and optional carrier sheets are separate.
WorkForce ES-580W (US standard package)Not verified
We have not verified this value. It is not a confirmed no or zero. Check the original source or ask the manufacturer if it affects your choice.
Full US B11B258201 packing-list verification remains pending; do not borrow contents from refurbished or EU offers.Source · 2026-10-10Epson America: WorkForce ES-580W US B11B258201Checked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.
ADS-3350W (US standard package)Scanner, AC adapter, USB 3.0 cable and setup guide documented.Source · 2026-10-10Brother: ADS-3350W US scanner, interfaces and specificationsChecked 2026-10-10. We reviewed the official page text on the check date. Checkout options were not verified.
Questions to check before buying
WorkForce ES-580W (US standard package)
US optical-resolution and complete packing-list evidence are pending.
Direct USB-memory capture and software-assisted cloud sharing are separate tasks.
ADS-3350W (US standard package)
One storefront sentence uses ADS-3340W; selected SKU and packing list identify ADS-3350W.
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